Question 1

Which digits will come in the place of '?' in the following series ? 372, 823, 644, 582, 46?, 8?7

Accepted Answer

Given series is 372, 823, 644, 582, 46?, 8?7 Here the series follow the rule that : 372 = 3+7+2 = 12 823 = 8+2+3 = 13 644 = 6+4+4 = 14 582 = 5+8+2 = 15 46? = 4+6+? = 16 => ? = 6 8?7 = 8+?+7 = 17 => ? = 2 So the missing numbers are 6 and 2

Question 2

Can you find the next number in the sequence "0, 1, 4, 7, 8, 5, 2, 3, 6, 9, 9, 6, 3, 2, 5, 8, 7, 4, 1, 0, 0, …" ?

Accepted Answer

The pattern follows the palindrome sequence. Here the digits 0 1 4 7 8 5 8 3 6 9 9 6 3 8 5 8 7 4 1 0 0 1 4 7 ... So the next digit in the sequence is 1.

Question 3

Find the next number in the given number sequence 200, 200, 100, 300, 75, ?

Accepted Answer

The given number series is 200, 200, 100, 300, 75, ? It follows a pattern that, 200 200 x 1 = 200 200 / 2 = 100 100 x 3 = 300 300 / 4 = 75 75 x 5 = 375 Hence, the next number in the given number sequence is 375.

Question 4

2, 16, 3, 81, 4, ?

Accepted Answer

The given number series is 2, 16, 3, 81, 4, ? 2 2^4 = 16 3 3^4 = 81 4 4^4 = 256 Hence, the next number is 256.

Question 5

Choose the correct alternative that will continue the same pattern and replace 'x' in given series 1,2,6,15,31,56,x

Accepted Answer

The pattern is + 1*1,+ 2*2, +3*3, + 4*4,+ 5*5,+ 6*6, . . . . . . . So missing term is 56+36=92

Question 6

Find out the wrong term in the series 169,144,121,100,85,64

Accepted Answer

The sequence is 13*13,12*12,11*11,10*10,9*9,8*8, . . . . . . So,85 is wrong term and must be replaced by 9*81

Question 7

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. 3F, 6G, 11I, 18L, ?

Accepted Answer

The letters move 1, 2, 3, ... steps forward. The numbers increase by + 3, + 5, + 7, + 9....

Question 8

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. Q1F, S2E, U6D, W21C, ?

Accepted Answer

The first letter moves two steps forward. The last letter moves one steps backward. The number series runs as follows : 1 x 1 + 1 = 2 2 x 2 + 2 = 6 6 x 3 + 3 = 21 21 x 4 + 4 = 88.

Question 9

What comes next in the series... 1A2, 3C4, 7G8, ___

Accepted Answer

The first digit is formed by adding the numbers which are the results of powers of 2 increased by one and second letter is the corresponding alphabet to that number...last number is the next number to the first one...therefore 15=7+8 (i.e. 2^3) O is corresponding alphabet to 15 and 16 comes after 15

Question 10

Find the next number in the series 64, 2, 32, 72, 3, 24, 76, 4, 19, ....., 5, 15.6

Accepted Answer

The pattern is 2x32=64, 3x24=72, 4x19=76 The next number = 5x15.6=78

Question 11

Find the wrong number from the following series ? 7 18 40 106 183 282 403

Accepted Answer

The given series follows the rule, +(11x1), +(11x3), +(11x5), +(11x7), +(11x9),.... So starting from 7, 7 + 11 = 18, 18 + 33 = 51, 51 + 55 = 106, ... So wrong number is 40 which is to be 51.

Question 12

Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 6,12,21,x,48

Accepted Answer

the pattern is +6,+9,+12,+15 the missing term is 21+12=33

Question 13

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. P3C, R5F, T8I, V12L, ?

Accepted Answer

The first letters of the terms are alternate. The sequence followed by the numbers is +2, +3, +4,.... The last letter of is three steps ahead of the last letter of the preceding term.

Question 14

Find the next number in the given series? 118, 166, 190, 202, 208, ?

Accepted Answer

The given series is 118, 166, 190, 202, 208, ? 118 118 + 48 = 166 166 + 24 = 190 190 + 12 = 202 202 + 6 = 208 208 + 3 = 211

Question 15

11M13, 13Q17, ? , 17V22 , 19W23

Accepted Answer

In the given series 1st term has odd number starting from 11, So the Series is 11, 13, 15, 17, 19 2nd term has an alphabet follwed by its alpha numeric number in the order +4, +3, +2, +1. So the Series is M13, Q17, T20, V22, W23 Therefore, 15T20 is the answer.

Question 16

In the following sum, “?” stands for which digit ? 8 + ?8 + 28 + 83 + 8? = 2?8

Accepted Answer

By trial and error method from the given options, '1' satisfies the above given equation.

Question 17

Find the next number in the given number series? 6, 6, 12, 36, 144, 720, ?

Accepted Answer

The given series is 6, 6, 12, 36, 144, 720, ? 6 6 x 1 = 6 6 x 2 = 12 12 x 3 = 36 36 x 4 = 144 144 x 5 = 720 720 x 6 = 4320 Hence, the next number in the given number series is 4320.

Question 18

Find the next number in the given number series? 8, 11, 19, 23, 32, ?

Accepted Answer

The given number series is 8, 11, 19, 23, 32, ? It follows a pattern that 8 + 11 = 19 11 + 12 = 23 19 + 13 = 32 23 + 14 = 37 32 + 15 = 47 .... Hence, the next number in the given series = 37.

Question 19

Choose the correct alternative that will continue the same pattern and replace 'x' in the series 6834,6151,5536,4983,x

Accepted Answer

Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of preceding term So,missing term is 4983-498=4485

Number Series Questions