# Odd man out Series - Excercise 1

## Questions

1.   3, 5, 11, 14, 17, 21

• 21
• 17
• 14
• 3

Each of the numbers except 14 is an odd number.
The number '14' is the only EVEN number.

2.   3, 5, 7, 12, 17, 19

• 19
• 17
• 5
• 12

Each of the numbers is a prime number except 12.

3.   41, 43, 47, 53, 61, 71, 73, 81

• 61
• 71
• 73
• 81

Each of the numbers except 81 is a prime number.

4.   835, 734, 642, 751, 853, 981, 532

• 751
• 853
• 981
• 532

In each number except 751, the difference of third and first digit is the middle one

5.   331, 482, 551, 263, 383, 362, 284

• 263
• 383
• 331
• 551

In each number except 383, the product of first and third digits is the middle one.

6.   16, 25, 36, 72, 144, 196, 225

• 36
• 72
• 196
• 225

Each of the numbers except 72 is a perfect square.

7.   10, 14, 16, 18, 21, 24, 26

• 26
• 24
• 21
• 18

Each of the numbers except 21 is an even number

8.   1, 4, 9, 16, 23, 25, 36

• 9
• 23
• 25
• 36

Each of the numbers except 23, is perfect square.

9.   1, 4, 9, 16, 20, 36, 49

• 1
• 9
• 20
• 49

${1^{2} 2^{2}3^{2}4^{2}5^{2}6^{2}7^{2}}$ But, instead of 52, it is 20 which to be turned out.

10.   6, 9, 15, 21, 24, 28, 30

• 28
• 21
• 24
• 30

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

11.   5, 16, 6, 16, 7, 16, 9

• 9
• 7
• 6
• None of these

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

12.   125, 127, 130, 135, 142, 153, 165

• 130
• 142
• 153
• 165