Practice Test


1) The nth element of the sequence 5, 7, 9, 11, is


2) The pth element of the sequence -1, 2, -4, 8 is


3) -5, 25, -125, 625, to 100 terms can be written as


4) Which term of the series 7 + 11 + 15 + … is 467?


5) Which term of the progression -1, -3, -5,.... is -57?


6) The value of y such that 2y + 7, 6y - 2, 8y + 4 will form an A.P. is


7) Third term of an A.P. is 8 and the 17 term is 51/ 2 Then 23rd term is


8) How many terms are there in an A.P. 8, 11, 14, 17, ...., 149?


9) The 25th term of the progression 1, 4, 7, 10 ….. as


10) The last term of the series 5, 7, 9, to 37 terms is


11) The last term of the A.P. 0.6, 1.2, 1.8,... to 19 terms is


12) 3 times the first term of A.P. is equal to the fourth term and its seventh term is 1 more than twice of the third term. Find the common difference.


13) How many numbers of two digits are divisible by 11?


14) The sum of the series 17, 13, 9, 5, 1, .... to 100 terms is


15) Poonam buys every month equity shares of value exceeding the last year’s by Rs. 25. In 25th year the total value of the shares purchased by her is Rs. 7250. Find the value of the equity shares bought by her in the 13th year.


16) The sum of all natural numbers between 95 and 1005 which are multiples of 5 is:


17) The sum of all numbers between 400 and 900 which are divisible by 13 is:


18) In a junior cricket team, ages of boys are in AR, the common difference being 3 months. The youngest boy is just 7 years old and the sum of the ages of all those boys is 250 years. The number of boys in the team is:


19) The two arithmetic means between 12 and 24 are


20) The sum of three integers in A.P. is 15 and their product is 80. The integers are


21) The number of numbers from 75 to 25555 divisible by 5 is


22) The rth term of an A.P. is (3r - 1) / 6. The sum of the first p terms of the series is


23) The arithmetic mean between 33 and 67 is


24) The 4 arithmetic means between -2 and 23 are


25) The 3rd term of the A.P., if first term of an A.P. is 14 and the sums of the first ten terms and the first five terms are equal in magnitude but opposite in sign is


26) The sum of a certain number of terms of an AP series -10, -8, -6, -4, is 26. The number of terms is


27) The 1st and nth term of an AP are -4 and 146 respectively. If the sum of first n terms is 7171, then the value of n is


28) The 7th term of the series 12, 24, 48, 96, is


29) The 6th term of the series 0.04, 0.2, 1, ... is


30) The last term of the series 0.5, 1, 2, 4 to 8 terms is


31) The 9th terms of the series 1, -3, 9, -27, is


32) The sum of the series -2, 6, -18 to 7 terms is


33) The second term of a GP is 24 and the fifth term is 81. The series is


34) Sum of three numbers x, y, z are in a G. P. is 39 and their product is 729. Then values of x, y, z are


35) If x, y, z are in G. P. & xyz = 27/8. The value of y is


36) Varun saves 1 paise in first day, 2 paise in second day, 4 paise in third day and so on, then his total savings in two weeks will be


37) Find the sum to n terms of the series: 7 + 77 + 777 + …. to n terms:


38) S = 0.1 + 0.11 + 0.111 + to n terms is


39) If sum of the first 20 terms of a G. P. is equal to 244 times of the sum of its first 10 terms. Then the value of common ratio is


40) Sum of how many terms of the series 1 + 3 + 9 + 27 + _______ is equal to 364?


41) The product of 3 numbers in G.P. is 729 and the sum of cubes is 20439. The numbers are


42) The sum of the series 4 + 8 + 16 + ....... to n terms is


43) The sum of the infinite GP 14 - 2 + 2 / 7 - 27 49 + is


44) The number of terms to be taken so that 2 + 4 + 8 + will become 8190 is


45) Three geometric means between 4 and 324 are


46) There are three numbers in A.P. such that their sum is 21. If 1, 5, 15 are added to them respectively, they make a G. P. The numbers are


47) The value of 0.423 is


48) The sum of the infinite series 2/3 + 4/9 + 8/27 + ________ is


49) If the sum of infinite terms of a G.P. is 15 and the sum of squares of those terms is 45. The series is


50) The value of 3.4 is


51) The sum of first two terms of a G.P. is 5/3 and the sum of infinite terms of that series is 3. The common ratio is


52) Four numbers in G.P. such that the third term is greater than the first by 9 and the fourth term is smaller than the second by 18, then the numbers are


53) In a G.P. if the (p + q)th term is m and (p - q)th term is n, pth term is:


54) The value of three numbers in GP, so that their sum is (57/2) and product is 729 are.


55) Find three numbers in G.P. such that their sum is 31 and the sum of their squares is 651.


56) If the sixth term of a G.P. is 121.5 and the third term is 36, then the series is:


57) If a, b, c, d are in G.P., then a + b, b + c, c + d are in:


58) A ball is dropped from a height of 48 m., and rebounds two third of the distance it falls. If it continues to fall and rebound in this way, how far will it travel before coming to rest:


59) There are three numbers are in G.P. such that their sum is 70. If the extreme terms are multiplied by 4 and the mean by 5, they become in A.P., then the numbers are:


60) A inventor of the chess board suggested a reward of one grain of gram for the first square, 2 grains for the second, 4 grains for the third and so on, doubling the amount of the grains for subsequent squares. How many grains would have to be given to the inventor (There are 64 squares in the chess board)?


61) If pth, qth, rth terms of a G.P. be m, n, r respectively, then (q - r) log m + (r - p) log n + (p - q) log r =


62) The sum of digits of a three digit number is 12. The digits are in AP. If the digits are reversed then the number is diminished by 396. The number is


63) The Compound Interest & Amount of a certain sum of money at compound interest of r% per annum for n years make a:


64) If x, y, z are three numbers between 2 and 18 such that:
(i) their sum is 25,
(ii) the numbers 2, x, y are consecutive terms of an A.P., and
(iii) the numbers y, z, 18 are consecutive terms of a G.P., then those numbers are


65) The sum of the first two terms of two series, one in A.P. and the other in G.P. is the same. If the first term of both series is 2/3, and the common difference of the A.P. and the common ratio of the G.P. is equal. Find the sum of first 20 terms of the A.P.


66) A certain ball when dropped to the ground rebound to 4/5 th of the height from which it falls; it is dropped from a height of 100 metres, find the total distance it travels before finally coming to rest.


67) If a, b, c are in A.P. and a, b - a, c - a are in G.P., then a : b : c is:


68) Numbers x, y, z are in G.P. such that x + y + z = 130 and xyz = 27000 are:


69) If the product of continuous three terms of a G.P. is 27 and the sum of their products in pairs is 39, the terms are:


70) If x, y, z are in A.P., then (y + z), (z + x), (x + y) are in:


71) If the sum of n terms of two A.P's are in the ratio (3n + 1):(n + 4), the ratio of the third term is:


72) If 2 x, (x + 10) and (3 x + 2) are three consecutive terms in A.P., the value of x is


73) If A; G are the AM & GM of two positive unequal quantities respectively, then


74) The AM & GM of two positive numbers are 40 and 24 respectively, then the numbers are


75) If the sum of three numbers in AP is 15 and 8, 6, 4 are added to them respectively, then the numbers make a G.P. The numbers are


76) The sum of four numbers in G.P. is 60 and the A.M. of the middle two is 12. The numbers are


77) Ramu took a loan of Rs. 6240 on the condition that he has to paid off this loan in 30 instalments. Each instalment would be Rs. 10 more then the preceding instalment. Then the value of the 1st instalment is


78) If x, y, z + 1 are in G.R and x, y, z are in A.P. then which one is correct.


79) If the difference between second term & first term of a G.P. is 2 and the sum to infinity is 50, the series is:


80) There are four numbers in G.P. such that the first term is less than the third by 9 and the second term is greater than the fourth by 18. Then the value of the common ratio is:


81) The value of S = 0.5 + 0.55 + 0.555 + ... to n terms is:


82) The sum of all numbers between 250 and 300


83) The sum of all natural numbers between 500 and 1000 which are divisible by 13


84) S = 3 + 5 + 7 + 9 + are in AP. If unity is added to the sum of any number of terms of this A.P. the resulting sum becomes


85) A person pays Rs. 975 by monthly instalment each less than the former by Rs. 5. The first instalment is Rs. 100. The time by which the entire amount will be paid is


86) Shweta saved Rs. 16,500 in 10 years. In each year she saved Rs. 100 more than the preceding year. The amount of money she saved in the 1st year was


87) The next term of 2 + 5 + 10 + 17 + 26 + ...... as:


88) If the m th term of an A.P. is n and the nth term is m the value of the (m + n) th term is.


89) The first term & common difference of an A.P. are 17 & - 2 respectively, then the sum of how many terms of will be equal to 72?


90) If the sums of first p, q, r terms of an AP are a, b, c respectively, then the value of (a / p) (q - r) + (b / q) (r - p) + (c / r) (p - q) is.


91) The sum of n terms of two A.Ps are in the ratio of (7n - 5): (5n + 17). Then the term of the both series are equal.


92) Find three numbers in A.P. whose sum is 6 and the sum of whose square is 44.


93) Find three numbers in AP. whose sum is 6 and the sum of their cubes is 36.


94) If p, q, r are in A.P. then (p/q r) (q + r), (q/r p) (q + p), (r/p q) (p + q) are in.


95) If (b + c - a) / a, (c + a - b) / b , (a + b - c) / c are in A.P. then a, b, c are in.


96) If a, b, c are in A.P. then (b + c), (c + a), (a + b) are in


97) A number x is added to the sum of any number of terms of the A.P. ,S = 3 + 5 + 7 + 9 + 11 + _______, resulting value becomes a perfect square, the value of x is


98) If each term of an A.P. is divided by a constant quantity then the resulting series will be in


99) If the second term of a G.P. having infinite no. of terms is 3/2 and its sum is 8, then its common ratio is:


100) If a, b, c are in GP. as well as in A.P. then


101) Geometric mean of two numbers a, b is:


102) If the sum of infinite terms of a G.P. having first term 2 is 3, then the common ratio is:


103) If the sum of infinite terms of a G.P. having first term 1 is 3/2, then the common ratio is:


104) The sum of an infinite G.P. with first term unity is (4/5), then the common ratio is:


105) The G.M. between 0.009 and 8.1 is:


106) The second term of a G.P. is 4 and the fourth term is 1024, then the common ratio is:


107) The fourth term of a G.P. is 2/27 and the seventh term is 2/729, then its common ratio is:


108) The fifth term of a G.P. is 81 and the second term is 24, then its common ratio is:


109) The sum of first n natural numbers is:


110) The sum of the cubes of the first n natural numbers is:


111) The reciprocals of the terms of a G.P. are in:


112) The third term of a G.P. is 2. The product of first five term is:


113) The three arithmetic means between 3 and 19 are:


114) The sum of the equidistant terms from both ends in an A.P. is equal to __________ of the A.P.


115) If a, b, c are three consecutive terms in G.P., then


116) If five consecutive terms of an A.P. are a, b, c, d, e then which one is correct.


117) If the sum of m terms of an A.P. is the same as the sum of its n terms, then the sum of (m + n) terms is:


118) The nth term of an A.P. is p and the sum of the first n terms is S. The first term is:


119) The first term of an A.P. is 'a', the second term is b and the last term is c. The sum of A.P. is:


120) Three numbers in G.P. with their sum 13/3 and sum of their squares 91/9 are:


121) If x , y - x , z - x are in G.P. and x = y/3 = z/5, then x, y, z are in:


122) If x is the A.M. between a and b; y is the A.M. between b and c while a, b, c are in G.P., then 1/x + 1/y =


123) a, b, x, y are positive numbers such that a, x, b are in A.P. and a, y, b are in G.P. and z = (2ab)/(a + b), then:


124) The value of S = 2/3 + 5/9 + 2/27 + 5/81 + to infinite terms is:


125) The sum of the series 1.3 + 3.5 + 5.7 + 7.9 + ..... to n terms is


126) 3 - 2 n - 1 is divisible by


127) The sum of n terms of the series 1.4 + 3.7 + 5.10 +... is:


128) The sum of n terms of the series 3 + 6 + 11 + 20 + 37 + ... is:


129) The sum of n terms of the series 1 + (1 + 3) + (1 + 3 + 5) + ... is:


130) The sum of n terms of the series 4 + 14 + 30 + 52 + 80 + ... is:


131) The sum of n terms of the series 2.32 + 5.42 + 8.52 + ... is:


132) The sum of n terms of the series 1.2.3 + 2.3.4. + 3.4.5 + ... is:


133) The expression n (n - 1) (2 n - 1) is divisible by:


134) The sum of all natural numbers between 100 and 1000 which are multiple of 5 is:


135) The first and the last terms of an A.P. are - 4 and 146. The sum of the terms is 7171. The number of terms is:


136) If the first term of a G.P. exceeds the second term by 2 and the sum to infinity is 50, the series is:


137) The sum of square of first n natural numbers is:


138) 2, 5, 8, 11, 14, 17, ... is an A.P. in which the common difference is?


139) Determine the common difference of progression 16, 13, 10, ... 25 terms


140) Two A.P.s have the same common difference. If the difference between their 100th terms is 111222333 then the difference between their millionth terms is


141) If a, b, c are in A.P., then 2b = ____


142) If the terms 2 x, (x + 10) and (3 x + 2) be in A.P., the value of x is:


143) The value of x such that 8 x + 4, 6 x - 2, 2 x + 7 will form an A.P. is


144) Find the 7th term of the A.P. 8, 5, 2, -1, -4, ......


145) The 20th term of the progression 1, 4, 7, 10, ...... is


146) For the A.P. 2, 5, 8, 11, 14, ...., 12th term is


147) The 13th term of series 93, 90, 87, .... is


148) The nth element of the sequence 1, 3, 5, 7, .... is


149) The nth term of the sequence 2, 4, 6, 8, ...... is


150) If the first term of an A.P. is 5 and its 100th term is -292, then its 51st term is


151) The mth term of an A.P. is n and nth term is m, the rth term of it is:


152) If the p th term of an A.P. is q and q th term is p, the value of the (p + q)th term is:


153) If the 5th and 12th terms of the A.P. are 14 and 35 respectively, find the A.P.


154) Which term of the A.P. 11, 8, 5, 2, ..... is -10?


155) Which term of the progression -1, -3, -5, .... is -39?


156) The last term of the series 5, 7, 9, ?? to 21 term is


157) The last term of the A.P. 0.6, 1.2, 1.8 to 13 term is


158) Determine the first term of an A.P. with common difference 3 & 7th term being 11


159) Find three numbers in AP whose sum is 6 and the product is -24


160) If the 10th term of an A.P. is twice the 4th term, and the 23rd term is 'k' times the 8th term, then the value of 'k' is


161) The sum of __________ between the actual values and the A.M is zero.


162) The A. M. between 2 & 4 is __________


163) The arithmetic mean between 8 & 20 is


164) The two arithmetic means between -6 and 14 is


165) The Arithmetic mean between 5 and 13 is


166) The arithmetic mean between 33 and 77 is


167) The arithmetic mean between a 81 c is


168) If the AM of two numbers is 6 and GM is 6 then find the numbers.


169) Between the two numbers whose sum is 13/9, an even number of A.M. is inserted. If the sum of arithmetic mean exceeds their number by unity, then number of arithmetic means inserted are


170) Three No's a, b, c are in A.P. find a - b + c


171) In an A.P. if the 3rd term is 18, 7 term is 30 then the sum of first 20 terms is:


172) The sum of progression (a + b), a, (a - b) n term is


173) The sum of the series 1 + 2 + 4 + 8 + .... to 10 term is


174) The sum of series 8, 4, 0 ...... to 50 terms is


175) The sum of all numbers between 200 and 300


176) The sum 1 + 2 + 3 + 4 ...... + 70 is equal to


177) The sum of an A.P. whose first term is - 4 and the last term is 146 is 7171. Find the value of n.


178) The sum of the series 1 + 2 + 3 + 4 + ....... + 100 is


179) The maximum sum of the A.P. series 40, 36, 32, .... is


180) The 8th term of the progression 8, 5, 2, -1, -4, ....... is


181) The 10th term from the end of the A.P. 4, 9, 14, _____ 254.


182) The sum of a series in A.P. is 72 the first term being 17 and the common difference -2. the number of terms is _____ .


183) The number of terms of series needed for the sum of the series 50 + 45 + 40 + _____ becomes zero


184) The number of terms in the series 1 + 3 + 5 + 7 + . . . . . + 61 is


185) The sum of certain numbers of terms of an A.P. series -6, -3, 0 . . . . . is 225. The number of terms is


186) How many terms are there in the A.P. whose first and fifth terms and -14 and 2 respectively and the sum of the term is 40?


187) The number of terms in the A.P. 7, 13, 19, ..... 97 is


188) The sum of all natural numbers from 100 to 300 which are divisible by 4 is


189) The sum of all natural numbers from 100 to 300 which are divisible by 5 is


190) The sum of all natural numbers from 100 to 300 which are divisible by 4 and 5 is


191) The sum of the first 100 terms common to the series 17, 21, 25 . . . . . and 16, 21, 26, . . . . . is


192) If the p th term of an A.P. is q and the q th term is p the value of the r th terms is


193) The sum of p terms of an A.P. is q and the sum of q terms is p. The sum of p + q terms is


194) If the n th terms of two A.P.'s are in the ratio (3 n + 1) : (n + 4) the ratio of the fourth term is


195) The five numbers in A.P. with their sum 25 and the sum of their squares 135 are


196) Three numbers are in A.P. whose sum is 69 and the product of first two is 483. Numbers are


197) Three numbers are in A.P. of whose sum is 15 and whose product is 105, then numbers are:


198) The three number in A.P. whose sum is 27 and the sum of their squares is 341 are


199) The four numbers in A.P. whose sum is 24 and their product is 945 are


200) The four numbers in A.P. whose sum is 20 and the sum of their squares is 120 are


201) The four numbers in A.P. with the sum of second and third being 22 and the product of the first and fourth being 85 are


202) Divide 69 into three parts which are in A.P and are such that the product of the 1st two parts is 483.


203) Sum of three numbers in A.P. is 12 and the sum of their cube is 408. The numbers are


204) The five numbers in A.P. with the sum 20 and product of the first and last 15 are


205) Find the four numbers in A.P. with the sum of second and third being 22 and the product of the first and fourth being 85.


206) In a certain arithmetic sequence, if the 24th term is twice the 10th term, then 72nd term is twice the


207) Divide 12.50 in five parts in A.P. such that the fist part and the last part are in the ratio 2:3


208) If sum of first 50 natural numbers is 1275 and the sum of first 50 odd numbers is 2500, then the sum of the first 50 even numbers is


209) The number of numbers between 74 and 25556 divisible by 5 is


210) The sum of three integers in A.P. is 15 and their product is 80 the integers are


211) The sum of all natural numbers from 100 to 300 which are exactly divisible by 4 or 5 is


212) The first term of an A.P. is 14 and the sum of the first five terms and the first ten terms are equal is magnitude but opposite in sign. The 3rd term of the A.P. is


213) Find the number which should be added to the sum of any number of terms of the A.P. so that the resultant is also an A.P.


214) If unit is added to the sum of any number of terms of the A.P. 3, 5, 7, 9, . . . . . the resulting sum is


215) In an Ashoka Chakra, the central angle made by the smallest sector, two small sectors, three small sectors and so on are


216) A person employed in a company at Rs. 3000 per month and he would get an increase of Rs. 100 per year. Find the total amount which he receives in 25 years and the monthly salary in the last year.


217) A person received the salary for the 1st Year is Rs. 5,00,000 per year and he received an increment of Rs. 15,000 per year then the sum of the salary he taken in 10 years


218) The 5th, 6th terms of the sequence 1, 5, 9, 13 are ________.


219) How many terms are needed for an arithmetic sequence 28,24 _________ to give a total of 72.


220) If the 5th, 6th terms of an arithmetic sequence are 19 and 23 the 1st term is _______.


221) If the 5th, 6th terms of an arithmetic sequence are -9, -15, the 2nd term will be ____________.


222) The 55th term of the sequence 2, 7, 12, 17 ________ is _________.


223) If X is the sum of first 100 positive integers divisible by 7, find X ________.


224) The 10th term of the sequence 21, 14, 7, 0, -7 ____ is _____.


225) How many terms are needed for an arithmetic sequence 20, 18 to give a total of 104?


226) The 9th term of the sequence 1, 5, 9, 13 _____ is ______.


227) Find the 7 th term of the A.P. if a = -5, d = 4 ______.


228) If the 5th and 8th terms of an A.P. are 22 and 37, the first two terms of the A.P. are ______.


229) If the 7th and 12th terms of an A.P. are 27 and 47, the 3rd and 4th terms will be _________.


230) The arithmetic mean of first 100 natural numbers is ______.


231) The sum of the numbers from 21 to 82 is ________.


232) The arithmetic mean of the numbers from 10 to 101 is ________.


233) If X represents the arithmetic mean of all the numbers between 121 to 802, then X is equal to _______.


234) The arithmetic mean of the numbers from 101 to 282 is _______.


235) If X is the sum of first 100 positive integers divisible by 9 find X.


236) If X is the arithmetic mean of 121 and 259, then the value of X is _______.


237) The arithmetic mean of the numbers, between -21 and 148 is ______.


238) The arithmetic meanof 1/8 and 15/8 is ________.


239) The number of terms between 40 to 792 divisible by 4 are ______.


240) The number of terms between 75 to 25555 divisible by 5 are ________.


241) Which term of an A.P. 5, 9, 13, . . . . . is 33


242) Which term of an A.P. -6, -2, 2, . . . . is 18


243) The 4 terms between 5 and 225 are _______.


244) The 6 terms between 5 and 215 are ______.


245) The 4 terms between 5 and 230 are ______.


246) The 4 terms between 6 and 326 are ________.


247) 4X + 5, 5X + 7, 8X - 1 will be in A.P. if X is _______.


248) 4X + 4, 6X + 2, 9X - 5 will be in A.P. if X is ________.


249) If the 1st term of an A.P. is -10, d = 8, find T4.


250) If the 1st term of an A.P. is 5, d-2, find T5 Term.


251) The sum of 3 numbers is 24 and their product is 384 (numbers are in A.P.), the numbers are _________.


252) The sum of three numbers is 30 and their product is 840 (numbers are in A.P.), the numbers are _______.


253) The sum of three numbers is 30 and their product is 750 (numbers are in A.P.), the numbers are ________.


254) The sum of three numbers is 48 and their product is 3072 (numbers are in A.P.), the numbers are ________.


255) Divide 69 into three parts which are in, A.P. and the product for the first two term is 483.


256) Which of these is an arithmetic series?


257) Which of these is not an A.P.?


258) If the sum of consecutive integers number starting with 10 is 1180, find the number of such numbers.


259) The sum of first n term of the series 1, 6 ,11, 16 is 3186, the value of n will be _________.


260) The sum of first n term of the series 1, 6, 11, 16 is 235, the value of n will be _______.


261) Which term of an A.P. 5, 15, 25 is 100 more than 20th term?


262) If the sum of first 24 terms of the series .........., 11, 14, ......... up to 24 terms is 948, the first term of the series is _______.


263) If the sum of first 36 terms of the series - ......... 14, 18, .......... up to 36 term is 2736, then the first term of the series will be ___________.


264) If first term of an arithmetic series is 9 and the sum total of the series up to first 10 terms is 225, the difference d will be __________.


265) If first term of an arithmetic series is 9 and the sum total of the series up to first 10 terms is 225, find the fourth term of the series ________.


266) Find the sum of first 20 terms of the series whose first term is 36 and third term is 30.


267) Find the 20th term of an arithmetic progression if the first term is 36 and third term is 30.


268) If the sum of first 20 terms of the series 20, 15, up to 20 terms is -550, find the 20th term of the series.


269) The sum of three numbers is 30 and their product is 640 (numbers are in A.P.), the numbers are _________.


270) The sum of three numbers is 6 and their product is-42 (numbers are in A.P.), the numbers are ________.


271) The sum of all 2 digits odd number is ___________.


272) Find the sum of first 10 even numbers _______.


273) If the sum of consecutive integers number starting with 10 is 1725 find the number of such numbers.


274) The third term of an A.P. is 7 and the 7th term is 2 more than 3 times the third term. Find the first term and common difference.


275) A man saves Rs. 16,500 in 10 years. If each year he saves Rs. 100 more than the previous year find his saving of the first year.


276) A man saves Rs. 40,500 in 12 years. If each year he saves Rs. 250 more than the previous year find his saving of the second year.


277) If the 6th and 11th terms of an Arithmetic progression are 29 and 54 find the 4th term.


278) If the 8th and 12th terms of an Arithmetic progression are 35 and 51 find the 10th term.


279) The sum of all 2 digits number which when divided by 4 yield a reminder of 1 is ___________.


280) Find the number of 2 digits numbers which when divided by 4 gives a reminder of 1.


281) The sum of all 2 digits number which when divided by 6 yield a result of 2 is _______.


282) Find the number of 2 digits numbers which when divided by 6 gives a reminder of 2.


283) If the first term of an A.P. is 4 and the sum of first 4 terms is equal to 1/3 of next 4 terms. The terms of the A.P. are


284) If the first term of an A.P. is 4 and the sum of first 4 terms is equal to 1/3 of next 4 terms. Find the sum of first 8 terms of an arithmetic progression


285) Which of these is the harmonic mean between 5/8 and 6/7?


286) Find the sum of first 10 odd numbers ______________.


287) Which of these is the harmonic mean between 1/8 and 6?


288) Find three unequal positive integers x, y, z such that 2, x, y form an A.P. and x, y, z form a G.P.


289) The nth element of the sequence 1, 3, 5, 7, is


290) The nth element of the sequence -1, 2, -4, 8 is


291) The value of x such that 8x + 4, 6x - 2, 2x + 7 will form an A.P. is


292) The 20th term of the progression 1, 4, 7, 10 ______is.


293) The sum of the series 9, 5, 1, .... to 100 terms is


294) The number of numbers between 74 and 25, 556 divisible by 5 is


295) The sum of a certain number of terms of an AP series -8, -6, -4, is 52. The number of terms is