Gk *Number Series Type Questons For All Exam with Explain*

*Number Series*

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

A. 12
B. 9
C. 1
D. 3

2) Find the odd man out. 1, 8, 27, 64, 125, 196, 216, 343

A. 64
B. 196
C. 216
D. 1

3) Find the odd man out. 15, 25, 30, 51, 85, 90, 115

A. 15
B. 25
C. 51
D. 90

4) Find the odd man out. 24,36,52,72,96

A. 72
B. 52
C. 36
D. 24

5) Find the odd man out. 187, 264, 386, 473, 682, 781

A. 386
B. 187
C. 781
D. 682

6) Find the odd man out. 12, 24, 34, 48, 64, 84

A. 48
B. 34
C. 24
D. 12

7) Find the odd man out. 362, 482, 551, 263, 344, 284

A. 362
B. 482
C. 551
D. 344

8) Find the odd man out. 742, 743, 633, 853, 871, 990, 532

A. 532
B. 990
C. 633
D. 742

9) Find the odd man out. 1, 5, 11, 17, 23, 29

A. 29
B. 17
C. 11
D. 1

10) Find the odd man out. 7,13,19,25,29,37,43

A. 19
B. 29
C. 25
D. 43

*Answers:*

*1-A*
_12 is an even number. All other given numbers are odd_

*2-B*
_The pattern is 13, 23, 33, 43, 53, 63, 73. 196 is not a perfect cube_

*3-C*

_All except 51 are multiples of 5_

*4-B*

_All except 52 are multiples of 6_

*5-A*
_In all numbers except 386, the middle digit is the sum of other two digits._

*6-B*

_All numbers except 34 are multiples of 4_

*7-D*

_In all numbers except 344, the product of first and third digits is the middle digit._

*8-D*

_In all numbers except 742, the difference of third and first digit is the middle digit._

*9-D*

_All given numbers except 1 are prime numbers.
One is not a prime number because it does not have two factors. It is divisible by only 1_

*10-C*
_All given numbers except 25 are prime numbers._