Question 1

Find out the wrong number in the given sequence of numbers. 582, 605, 588, 611, 634, 617, 600

Accepted Answer

Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong.

Question 2

Find the odd man out. 253, 136, 352, 324, 631, 244

Accepted Answer

The Sum of the digits in each number, Except 324 is 10.

Question 3

Find out the wrong number in the given sequence of numbers. 36, 54, 18, 27, 9, 18.5, 4.5

Accepted Answer

The terms are alternatively multiplied by 1.5 and divided by 3. However, 18.5 does not satisfy it.

Question 4

Find out the wrong number in the given sequence of numbers. 52, 51, 48, 43, 34, 27, 16

Accepted Answer

Subtract 1, 3, 5, 7, 9, 11 from successive numbers. So, 34 is wrong.

Question 5

Find out the wrong number in the series. 7, 8, 18, 57, 228, 1165, 6996

Accepted Answer

Let the given numbers be A, B, C, D, E, F, G. Then, A, A x 1 + 1, B x 2 + 2, C x 3 + 3, D x 4 + 4, E x 5 + 5, F x 6 + 6 are the required numbers. Clearly, 228 is wrong.

Question 6

Find out the wrong number in the given sequence of numbers. 6, 13, 18, 25, 30, 37, 40

Accepted Answer

The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5. So, 40 is wrong.

Question 7

Find the one which does not belong to that group ?

Accepted Answer

The digits on either side of the letter in each of the groups 1P6, 2T0, and 1R8 indicate the place value of the letter in the alphabet. This pattern is not followed by 2Y4.

Question 8

Insert the missing number. 16, 33, 65, 131, 261, (....)

Accepted Answer

Each number is twice the preceding one with 1 added or subtracted alternatively. So, the next number is (2 x 261 + 1) = 523.

Question 9

Find the odd one out of the following options.

Accepted Answer

Except Granite all other options belong to the group of precious stones.

Question 10

Find the odd number in the following number series? 24, 4, 13, 41, 151, 640

Accepted Answer

The given number series follows the pattern that, 24×0 + 4 = 4 4×1 + 9 = 13 13×2 + 16 = 42 42×3 + 25 = 151 151×4 + 36 = 640 Therefore, the odd number in the given series is 41

Question 11

10 25 45 54 60 75 85 Find the Odd Number?

Accepted Answer

In given Series, all the numbers except 54 are multiples of 5.

Question 12

Find the odd term from the given series of numbers ? 125, 127, 130, 135, 142, 153, 165 ?

Accepted Answer

From the beginning, the next term comes by adding prime numbers in a sequence of 2, 3, 5, 7, 9, 11, 13... to its previous term. But 165 will not be in the series as it must be replaced by 166 since 153+13 = 166.

Question 13

Find out the wrong number in the given sequence of numbers. 5, 16, 6, 16, 7, 16, 9

Accepted Answer

Terms at odd places are 5, 6, 7, 8 etc. and each term at even place is 16. So, 9 is wrong.

Question 14

3125 256 ? 4 1 Which number replaces the "?" in the question?

Accepted Answer

In the given series numbers are arranged following the rule, 5 5 , 4 4 , 3 3 , 2 2 , 1 1 Therefore, the missing number is 27.

Question 15

Find the odd man out of the series given 8, 16, 20, 36, 68

Accepted Answer

The given number series is 8, 16, 20, 36, 68 8 8 x 2 - 4 = 12 (NOT 16) 12 x 2 - 4 = 20 20 x 2 - 4 = 36 36 x 2 - 4 = 68 Hence, the odd man in the given series is 16.

Question 16

2.5, 3.5, 9, 40, ? Find the next number in the above-given series?

Accepted Answer

2.5 × 1 + 1 = 3.5 3.5 × 2 + 2 = 9 9 × 4 + 4 = 40 40 × 8 + 8 = 328

Question 17

194, 194, 191, 183, 168, ? Find the next number in the above series?

Accepted Answer

Here the series follows, 194 194 - (1x1 - 1) = 194 194 - (2x2 - 1) = 191 191 - (3x3 - 1) = 183 183 - (4x4 - 1) = 168 168 - (5x5 - 1) = 144

Question 18

152, 124, 96, 69, 40 Find the odd man out?

Accepted Answer

The given number series is 152, 124, 96, 69, 40 152 152 - 28 = 124 124 - 28 = 96 96 - 28 = 68 (not 69) 68 - 28 = 40 Hence, the odd man in the given number series is 69.

Question 19

Find the odd man out 1 4 9 16 22 36?

Accepted Answer

In the given series 1 4 9 16 22 36 1 = 1 x 1 4 = 2 x 2 9 = 3 x 3 16 = 4 x 4 25 = 5 x 5 (Not 22) 36 = 6 x 6 Hence, the odd man in the series is 22.

Question 20

What is the next number in the given Number Series? 5, 24, 94, 279, ?

Accepted Answer

The given number series follows a pattern that 5 x 5 – 1 = 24 24 x 4 – 2 = 94 94 x 3 – 3 = 279 279 x 2 – 4 = 554

Odd Man Out and Series Questions