Odd man out Series - Excercise 1

Questions

1.   3, 5, 11, 14, 17, 21

  • 21
  • 17
  • 14
  • 3
4
The Correct answer is :14

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
4
The Correct answer is :12

Each of the numbers is a prime number except 12.

3.   41, 43, 47, 53, 61, 71, 73, 81

  • 61
  • 71
  • 73
  • 81
4
The Correct answer is :81

Each of the numbers except 81 is a prime number.

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

  • 751
  • 853
  • 981
  • 532
4
The Correct answer is :751

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
4
The Correct answer is :383

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
4
The Correct answer is :72

Each of the numbers except 72 is a perfect square.

7.   10, 14, 16, 18, 21, 24, 26

  • 26
  • 24
  • 21
  • 18
4
The Correct answer is :21

Each of the numbers except 21 is an even number

8.   1, 4, 9, 16, 23, 25, 36

  • 9
  • 23
  • 25
  • 36
4
The Correct answer is :23

Each of the numbers except 23, is perfect square.

9.   1, 4, 9, 16, 20, 36, 49

  • 1
  • 9
  • 20
  • 49
4
The Correct answer is :20

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

10.   6, 9, 15, 21, 24, 28, 30

  • 28
  • 21
  • 24
  • 30
4
The Correct answer is :28

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
4
The Correct answer is :9

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
4
The Correct answer is :165

Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong.