**Odd Man Out Series Multiple Choice Questions**

**1. Insert the missing number :**

**2, 6, 12, 20, 30, 42, 56, (…..)**

A. 60

B. 64

C. 72

D. 70

The pattern is 1 × 2, 2 × 3, 3 × 4, 4 × 5, 5 × 6, 6 × 7, 7 × 8.

So, the next numbers is 8 × 9 = 72.

**2. Find the odd man out :**

**16, 25, 36, 72, 144, 196, 225**

A. 36

B. 72

C. 196

D. 225

Each of the numbers except 72, is a perfect square.

**3. Find the odd man out :**

**2, 5, 10, 50, 500, 5000**

A. 0

B. 5

C. 10

D. 5000

Pattern is 1st × 2nd = 3rd;

2nd × 3rd = 4th;

3rd × 4th = 5th;

But, 4th × 5th = 50 × 500 = 25000 ‡ 5000 = 6th.

**4. Find out the wrong number in the series :**

**19, 26, 33, 46, 59, 74, 91**

A. 26

B. 33

C. 46

D. 59

Go on adding 7, 9, 11, 13, 15, 17 respectively to obtain the next number. So, 33 is wrong.

**5. Find the odd man out :**

**253, 136, 352, 460, 324, 631, 244**

A. 136

B. 324

C. 352

D. 631

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

**6. Find the odd man out. 1, 3, 9, 12, 19, 29**

A. 12

B. 9

C. 1

D. 3

12 is an even number. All other given numbers are odd

**7. Find the odd man out. 1, 8, 27, 64, 125, 196, 216, 343**

A. 64

B. 196

C. 216

D. 1

The pattern is 13, 23, 33, 43, 53, 63, 73.

196 is not a perfect cube

**8. Find the odd man out. 15, 25, 30, 51, 85, 90, 115**

A. 15

B. 25

C. 51

D. 90

All except 51 are multiples of 5

**9. Find the odd man out. 24,36,52,72,96**

A. 72

B. 52

C. 36

D. 24

All except 52 are multiples of 6

**10. Find the odd man out. 187, 264, 386, 473, 682, 781**

A. 386

B. 187

C. 781

D. 682

In all numbers except 386, the middle digit is the sum of other two digits.

**11. Insert the missing number. ****8, 7, 11, 12, 14, 17, 17, 22, (….)**

A. 20

B. 22

C. 24

D. 27

There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.

**12. Find out the wrong number in the given sequence of numbers.**

**582, 605, 588, 611, 634, 617, 600**

A. 634

B. 611

C. 605

D. 600

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

**13. Find the odd man out? 396, 462, 572, 427, 671, 264.**

A. 671

B. 462

C. 427

D. 264

In each number except 427, the middle digit is the sum of other two.

**14. Find the odd man out.**

**2, 5, 10, 17, 26, 37, 50, 64**

A. 50

B. 37

C. 26

D. 64

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1

But, 64 is out of pattern.

**15. Insert the missing number.**

**2, 4, 12, 48, 240, (….)**

A. 960

B. 1440

C. 1080

D. 1920

Go on multiplying the given numbers by 2, 3, 4, 5, 6.

So, the correct next number is 1440.

**16. Find the one which does not belong to that group?**

A. 3

B. 4

C. 5

D. 9

E. 7

3, 5, 9 and 7 are odd numbers, but not 4.

**17. Find the one which does not belong to that group?**

A. 27

B. 37

C. 47

D. 67

37, 47, 67 and 17 are prime numbers but not 27.

**18. Find the one which does not belong to that group?**

A. 16

B. 28

C. 36

D. 64

16, 36, 64 and 4 are perfect squares but not 28.

**19. Find the one which does not belong to that group?**

A. 41

B. 43

C. 53

D. 47

E. 57

41, 43, 47 and 53 are prime numbers, but not 57.

**20. Find the one which does not belong to that group?**

A. 36

B. 49

C. 64

D. 81

36, 64, 81 and 100 are squares of composite numbers, but not 49.

**21. 3, 5, 11, 14, 17, 21**

A. 21

B. 17

C. 14

D. 3

Each of the numbers except 14 is an odd number.

The number ’14’ is the only EVEN number.

**22. 8, 27, 64, 100, 125, 216, 343**

A. 27

B. 100

C. 125

D. 343

The pattern is 2^3, 3^3, 4^3, 5^3, 6^3, 7^3. But, 100 is not a perfect cube.

**23. 10, 25, 45, 54, 60, 75, 80**

A. 10

B. 45

C. 54

D. 75

Each of the numbers except 54 is multiple of 5.

**24. 396, 462, 572, 427, 671, 264**

A. 396

B. 427

C. 671

D. 264

In each number except 427, the middle digit is the sum of other two.

**25. 6, 9, 15, 21, 24, 28, 30**

A. 28

B. 21

C. 24

D. 30

Each of the numbers except 28, is a multiple of 3.