Question 1
Find Odd Man Out : 3, 5, 11, 14, 17, 21
A. 21
B. 17
C. 14
D. 3
View Answer
Answer: Option C
Explanation: Each of the numbers except 14 is an odd number. The number 14 is the only EVEN number. So in this odd man out and series question 14 will be output.
Question 2
Find Odd Man Out : 6, 9, 15, 21, 24, 28, 30
A. 28
B. 21
C. 24
D. 30
View Answer
Answer: Option A
Explanation: Each of the numbers except 28, is a multiple of 3. So in this odd man out and series question 28 will be output.
Question 3
Find Odd Man Out : 2, 5, 10, 17, 26, 37, 50, 64
A. 50
B. 26
C. 37
D. 64
View Answer
Answer: Option D
Explanation: (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. So in this odd man out and series question 64 will be answer.
Question 4
Find Odd Man Out : 16, 25, 36, 72, 144, 196, 225
A. 36
B. 72
C. 196
D. 225
View Answer
Answer: Option B
Explanation: Each of the numbers except 72 is a perfect square. So in this odd man out and series question 72 will be output.
Question 5
Find Odd Man Out : 3, 5, 7, 12, 17, 19
A. 19
B. 17
C. 12
D. 5
View Answer
Answer: C
Explanation: Each of the numbers is a prime number except 12. So in this odd man out and series question 12 will be answer.
Question 6
Find the odd man out. : 3, 5, 11, 14, 17, 21
A. 21
B. 17
C. 14
D. 3
View Answer
Answer: Option C
Explanation:
Each of the numbers except 14 is an odd number.
The number '14' is the only EVEN number.
Question 7
Find the odd man out. : 8, 27, 64, 100, 125, 216, 343
A. 27
B. 100
C. 125
D. 343
View Answer
Answer: Option B
Explanation:
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.
Question 8
Find the odd man out. : 10, 25, 45, 54, 60, 75, 80
A. 10
B. 45
C. 54
D. 75
View Answer
Answer: Option C
Explanation:
Each of the numbers except 54 is multiple of 5.
Question 9
Find the odd man out. : 396, 462, 572, 427, 671, 264
A. 396
B. 427
C. 671
D. 264
View Answer
Answer: Option B
Explanation:
In each number except 427, the middle digit is the sum of other two.
Question 10
Find the odd man out. : 6, 9, 15, 21, 24, 28, 30
A. 28
B. 21
C. 24
D. 30
View Answer
Answer: Option A
Explanation:
Each of the numbers except 28, is a multiple of 3.
Question 11
Find the odd man out. : 1, 4, 9, 16, 23, 25, 36
A. 9
B. 23
C. 25
D. 36
View Answer
Answer: Option B
Explanation:
Each of the numbers except 23, is perfect square.
Question 12
Find the odd man out. : 1, 4, 9, 16, 20, 36, 49
A. 1
B. 9
C. 20
D. 49
View Answer
Answer: Option C
Explanation:
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.
Question 13
Find the odd man out. : 2, 5, 10, 17, 26, 37, 50, 64
A. 50
B. 26
C. 37
D. 64
View Answer
Answer: Option D
Explanation:
(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.
Question 14
Find the odd man out. : 10, 14, 16, 18, 21, 24, 26
A. 26
B. 24
C. 21
D. 18
View Answer
Answer: Option C
Explanation:
Each of the numbers except 21 is an even number.
Question 15
Find the odd man out. : 16, 25, 36, 72, 144, 196, 225
A. 36
B. 72
C. 196
D. 225
View Answer
Answer: Option B
Explanation:
Each of the numbers except 72 is a perfect square.
Question 16
Find the odd man out. : 331, 482, 551, 263, 383, 362, 284
A. 263
B. 383
C. 362
D. 284
View Answer
Answer: Option B
Explanation:
In each number except 383, the product of first and third digits is the middle one.
Question 17
Find the odd man out. : 835, 734, 642, 751, 853, 981, 532
A. 751
B. 853
C. 981
D. 532
View Answer
Answer: Option A
Explanation:
In each number except 751, the difference of third and first digit is the middle one.
Question 18
Find the odd man out. : 41, 43, 47, 53, 61, 71, 73, 81
A. 61
B. 71
C. 73
D. 81
View Answer
Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.
Question 19
Find the odd man out. : 3, 5, 7, 12, 17, 19
A. 19
B. 17
C. 5
D. 12
View Answer
Answer: Option D
Explanation:
Each of the numbers is a prime number except 12.
Question 20
Find out the wrong number in the given sequence of numbers : 582, 605, 588, 611, 634, 617, 600
A. 634
B. 617
C. 605
D. 600
View Answer
Answer: Option A
Explanation:
Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong.
Question 21
Find out the wrong number in the given sequence of numbers : 22, 33, 66, 99, 121, 279, 594
A. 33
B. 121
C. 279
D. 594
View Answer
Answer: Option C
Explanation:
Each of the number except 279 is a multiple of 11.
Question 22
Find out the wrong number in the given sequence of numbers : 8, 13, 21, 32, 47, 63, 83
A. 47
B. 63
C. 32
D. 83
View Answer
Answer: Option A
Explanation:
Go on adding 5, 8, 11, 14, 17, 20.
So, the number 47 is wrong and must be replaced by 46.
Question 23
Find out the wrong number in the given sequence of numbers : 1, 8, 27, 64, 124, 216, 343
A. 8
B. 27
C. 64
D. 124
View Answer
Answer: Option D
Explanation:
The numbers are 1^3, 2^3, 3^3, 4^3 etc. So, 124 is wrong; it must have been 5^3 i.e., 125.
Question 24
Find out the wrong number in the given sequence of numbers : 1, 2, 6, 15, 31, 56, 91
A. 31
B. 91
C. 56
D. 15
View Answer
Answer: Option B
Explanation:
1, 1 + 1^2 = 2, 2 + 2^2 = 6, 6 + 3^2 = 15, 15 + 4^2 = 31, 31 + 5^2 = 56, 56 + 6^2 = 92
Last number of given series must be 92 not 91.
Question 25
Find out the wrong number in the given sequence of numbers : 52, 51, 48, 43, 34, 27, 16
A. 27
B. 34
C. 43
D. 48
View Answer
Answer: Option B
Explanation:
Subtract 1, 3, 5, 7, 9, 11 from successive numbers.
So, 34 is wrong.
Question 26
Find out the wrong number in the given sequence of numbers : 4, 6, 8, 9, 10, 11, 12
A. 10
B. 11
C. 12
D. 9
View Answer
Answer: Option B
Explanation:
Each number is a composite number except 11.
Question 27
Find out the wrong number in the given sequence of numbers : 105, 85, 60, 30, 0, -45, -90
A. 0
B. 85
C. -45
D. 60
View Answer
Answer: Option A
Explanation:
Subtract 20, 25, 30, 35, 40, 45 from successive numbers.
So, 0 is wrong.
Question 28
Find out the wrong number in the given sequence of numbers : 5, 16, 6, 16, 7, 16, 9
A. 9
B. 7
C. 6
D. None of these
View Answer
9
Answer: Option A
Explanation:
Terms at odd places are 5, 6, 7, 8 etc. and each term at even place is 16.
So, 9 is wrong.
Question 29
Find out the wrong number in the given sequence of numbers : 125, 127, 130, 135, 142, 153, 165
A. 130
B. 142
C. 153
D. 165
View Answer
Answer: Option D
Explanation:
Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong.
Question 30
Find out the wrong number in the given sequence of numbers : 46080, 3840, 384, 48, 24, 2, 1
A. 1
B. 2
C. 24
D. 384
View Answer
Answer: Option C
Explanation:
The terms are successively divided by 12, 10, 8, 6, ...etc.
So, 24 is wrong, it should be 8 (48/6 = 8).
Question 31
Find out the wrong number in the given sequence of numbers : 6, 13, 18, 25, 30, 37, 40
A. 25
B. 30
C. 37
D. 40
View Answer
Answer: Option D
Explanation:
The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5.
So, 40 is wrong.
Question 32
Find out the wrong number in the given sequence of numbers : 36, 54, 18, 27, 9, 18.5, 4.5
A. 4.5
B. 18.5
C. 54
D. 18
View Answer
Answer: Option B
Explanation:
The terms are alternatively multiplied by 1.5 and divided by 3. However, 18.5 does not satisfy it.
Question 33
Find out the wrong number in the given sequence of numbers : 56, 72, 90, 110, 132, 150
A. 72
B. 110
C. 132
D. 150
View Answer
Answer: Option D
Explanation:
The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.
So, 150 is wrong.
Question 34
Find out the wrong number in the given sequence of numbers : 25, 36, 49, 81, 121, 169, 225
A. 36
B. 49
C. 121
D. 169
View Answer
Answer: Option A
Explanation:
The numbers are squares of odd natural numbers, starting from 5 up to 15.
So, 36 is wrong.
Question 35
Insert the missing number : 16, 33, 65, 131, 261, (....)
A. 523
B. 521
C. 613
D. 721
View Answer
Answer: Option A
Explanation:
Each number is twice the preceding one with 1 added or subtracted alternatively.
So, the next number is (2 x 261 + 1) = 523.
Question 36
Insert the missing number : 10, 5, 13, 10, 16, 20, 19, (....)
A. 22
B. 40
C. 38
D. 23
View Answer
Answer: Option B
Explanation:
There are two series (10, 13, 16, 19) and (5, 10, 20, 40), one increasing by 3 and the other multiplied by 2.
Question 37
Insert the missing number : 1, 4, 9, 16, 25, 36, 49, (....)
A. 54
B. 56
C. 64
D. 81
View Answer
Answer: Option C
Explanation:
Numbers are 12, 22, 32, 42, 52, 62, 72.
So, the next number is 82 = 64.
Question 38
Insert the missing number : 2, 4, 12, 48, 240, (....)
A. 960
B. 1440
C. 1080
D. 1920
View Answer
Answer: Option B
Explanation:
Go on multiplying the given numbers by 2, 3, 4, 5, 6.
So, the correct next number is 1440.
Question 39
Insert the missing number : 8, 7, 11, 12, 14, 17, 17, 22, (....)
A. 27
B. 20
C. 22
D. 24
View Answer
Answer: Option B
Explanation:
There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.
Question 40
Insert the missing number : 11, 13, 17, 19, 23, 29, 31, 37, 41, (....)
A. 43
B. 47
C. 53
D. 51
View Answer
Answer: Option A
Explanation:
Numbers are all primes. The next prime is 43.
Question 41
Insert the missing number : 8, 24, 12, 36, 18, 54, (....)
A. 27
B. 108
C. 68
D. 72
View Answer
Answer: Option A
Explanation:
Numbers are alternatively multiplied by 3 and divided by 2.
So, the next number = 54 ÷ 2 = 27.
Question 42
Insert the missing number : 2, 6, 12, 20, 30, 42, 56, (....)
A. 61
B. 64
C. 72
D. 70
View Answer
Answer: Option C
Explanation:
The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.
So, the next number is 8 x 9 = 72.
Question 43
Insert the missing number : 4, -8, 16, -32, 64, (....)
A. 128
B. -128
C. 192
D. -192
View Answer
Answer: Option B
Explanation:
Each number is the proceeding number multiplied by -2.
So, the required number is -128.
Question 44
Insert the missing number : 7, 26, 63, 124, 215, 342, (....)
A. 481
B. 511
C. 391
D. -421
View Answer
Answer: Option B
Explanation:
Numbers are (23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1) etc.
So, the next number is (83 - 1) = (512 - 1) = 511.
Question 45
Insert the missing number : 5, 10, 13, 26, 29, 58, 61, (....)
A. 122
B. 64
C. 125
D. 128
View Answer
Answer: Option A
Explanation:
Numbers are alternatively multiplied by 2 and increased by 3.
So, the missing number = 61 x 2 = 122.
Question 46
Insert the missing number : 15, 31, 63, 127, 255, (....)
A. 513
B. 511
C. 517
D. 523
View Answer
Answer: Option B
Explanation:
Each number is double the preceding one plus 1.
So, the next number is (255 x 2) + 1 = 511.
Question 47
Insert the missing number : 1, 8, 27, 64, 125, 216, (....)
A. 354
B. 343
C. 392
D. 245
View Answer
Answer: Option B
Explanation:
Numbers are 1^3, 2^3, 3^3, 4^3, 5^3, 6^3.
So, the missing number is 7^3 = 343.
Question 48
Insert the missing number : 3, 7, 6, 5, 9, 3, 12, 1, 15, (....)
A. 18
B. 13
C. -1
D. 3
View Answer
Answer: Option C
Explanation:
There are two series, beginning respectively with 3 and 7. In one 3 is added and in another 2 is subtracted.
The next number is 1 - 2 = -1.
Question 49
Find out the wrong number in the series : 7, 8, 18, 57, 228, 1165, 6996
A. 8
B. 18
C. 57
D. 228
View Answer
Answer: Option D
Explanation:
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 50
Find out the wrong number in the series : 1, 1, 2, 6, 24, 96, 720
A. 720
B. 96
C. 24
D. 2
View Answer
Answer: Option B
Explanation:
Go on multiplying with 1, 2, 3, 4, 5, 6 to get next number.
So, 96 is wrong.
Question 51
Find out the wrong number in the series : 196, 169, 144, 121, 100, 80, 64
A. 144
B. 121
C. 100
D. 80
View Answer
Answer: Option D
Explanation:
Numbers must be (14)^2, (13)^2, (12)^2, (11)^2, (10)^2, (9)^2, (8)^2.
So, 80 is wrong.
Question 52
Find out the wrong number in the series : 445, 221, 109, 46, 25, 11, 4
A. 221
B. 109
C. 46
D. 25
View Answer
Answer: Option C
Explanation:
Go on subtracting 3 and dividing the result by 2 to obtain the next number.
Clearly, 46 is wrong.
Question 53
Find out the wrong number in the series : 190, 166, 145, 128, 112, 100, 91
A. 190
B. 166
C. 145
D. 128
View Answer
Answer: Option D
Explanation:
Go on subtracting 24, 21, 18, 15, 12, 9 from the numbers to get the next number.
190 - 24 = 166
166 - 21 = 145
145 - 18 = 127 [Here, 128 is placed instead of 127]
127 - 15 = 112
112 - 12 = 100 ... and so on.
Therefore, 128 is wrong.
Question 54
Find out the wrong number in the series : 19, 26, 33, 46, 59, 74, 91
A. 26
B. 33
C. 46
D. 59
View Answer
Answer: Option B
Explanation:
Go on adding 7, 9, 11, 13, 15, 17 respectively to obtain the next number.
So, 33 is wrong. It must be 35
Question 55
Find out the wrong number in the series : 1, 3, 10, 21, 64, 129, 356, 777
A. 21
B. 64
C. 129
D. 356
View Answer
Answer: Option D
Explanation:
A x 2 + 1, B x 3 + 1, C x 2 + 1, D x 3 + 1 and so on.
So, 356 is wrong.
Question 56
Find out the wrong number in the series : 6, 12, 48, 100, 384, 768, 3072
A. 12
B. 48
C. 100
D. 384
View Answer
Answer: Option C
Explanation:
Each even term of the series is obtained by multiplying the previous term by 2.
2nd term = (1st term) x 2 = 6 x 2 = 12
4th term = (3rd term) x 2 = 48 x 2 = 96.
6th term = (5th term) x 2 = 384 x 2 =768.
4th term should be 96 instead of 100.
Question 57
Find out the wrong number in the series : 40960, 10240, 2560, 640, 200, 40, 10
A. 40960
B. 10240
C. 2560
D. 640
View Answer
Answer: Option C
Explanation:
Go on dividing by 4 to get the next number.
So, 200 is wrong.
Question 58
Find out the wrong number in the series : 3, 7, 15, 39, 63, 127, 255, 511
A. 7
B. 15
C. 39
D. 63
View Answer
Answer: Option C
Explanation:
Go on multiplying 2 and adding 1 to get the next number.
So, 39 is wrong.
Answer: Option C
Explanation:
Go on multiplying 2 and adding 1 to get the next number.
So, 39 is wrong.
Question 59
Find out the wrong number in the series : 64, 71, 80, 91, 104, 119, 135, 155
A. 91
B. 104
C. 119
D. 135
View Answer
Answer: Option D
Explanation:
Go on adding 7, 9, 11, 13, 15, 17, 19 respectively to obtain the next number.
So, 135 is wrong.
Question 60
Find out the wrong number in the series : 15, 16, 34, 105, 424, 2124, 12756
A. 34
B. 105
C. 424
D. 2124
View Answer
Answer: Option D
Explanation:
2nd term = (1st term) x 1 + 1 = 15 x 1 + 1 = 16.
3rd term = (2nd term) x 2 + 2 = 16 x 2 + 2 = 34.
4th term = (3th term) x 3 + 3 = 34 x 3 + 3 = 105.
5th term = (4th term) x 4 + 4 = 105 x 4 + 4 = 424
6th term = (5th term) x 5 + 5 = 424 x 5 + 5 = 2125
6th term should 2125 instead of 2124.
Question 61
Find out the wrong number in the series : 10, 26, 74, 218, 654, 1946, 5834
A. 74
B. 218
C. 654
D. 1946
View Answer
Answer: Option D
Explanation:
2nd term = (1st term) x 3 - 4 = 10 x 3 - 4 = 26.
3rd term = (2nd term) x 3 - 4 = 26 x 3 - 4 = 74.
4th term = (3th term) x 3 - 4 = 74 x 3 - 4 = 218.
5th term = (4th term) x 3 - 4 = 218 x 3 - 4 = 650
5th term must be 650 instead of 654.
Question 62
Find out the wrong number in the series : 2880, 480, 92, 24, 8, 4, 4
A. 480
B. 92
C. 24
D. 8
View Answer
Answer: Option B
Explanation:
Go on dividing by 6, 5, 4, 3, 2, 1 respectively to obtain the next number.
Clearly, 92 is wrong.
Question 63
Find out the wrong number in the series : 3, 7, 15, 27, 63, 127, 255
A. 7
B. 15
C. 27
D. 63
View Answer
Answer: Option C
Explanation:
Go on multiplying the number by 2 and adding 1 to it to get the next number.
So, 27 is wrong.
Question 64
3, 5, 11, 14, 17, 21
A. 21
B. 17
C. 14
D. 3
View Answer
Answer: Option C
Explanation:
Each of the numbers except 14 is an odd number.The number '14' is the only EVEN number.
Question 65
8, 27, 64, 100, 125, 216, 343
A. 27
B. 100
C. 125
D. 343
View Answer
Answer: Option B
Explanation:
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.
Question 66
10, 25, 45, 54, 60, 75, 80
A. 10
B. 45
C. 54
D. 75
View Answer
Answer: Option C
Explanation:
Each of the numbers except 54 is multiple of 5.
Question 67
396, 462, 572, 427, 671, 264
A. 396
B. 427
C. 671
D. 264
View Answer
Answer: Option B
Explanation:
In each number except 427, the middle digit is the sum of other two.
Question 68
6, 9, 15, 21, 24, 28, 30
A. 28
B. 21
C. 24
D. 30
View Answer
Answer: Option A
Explanation:
Each of the numbers except 28, is a multiple of 3.
Question 69
1, 4, 9, 16, 23, 25, 36
A. 9
B. 23
C. 25
D. 36
View Answer
Answer: Option B
Explanation:
Each of the numbers except 23, is perfect square.
Question 70
1, 4, 9, 16, 20, 36, 49
A. 1
B. 9
C. 20
D. 49
View Answer
Answer: Option C
Explanation:
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.
Question 71
2, 5, 10, 17, 26, 37, 50, 64
A. 50
B. 26
C. 37
D. 64
View Answer
Answer: Option D
Explanation:
(1×1) + 1, (2×2) + 1, (3×3) + 1, (4×4) + 1, (5×5) + 1, (6×6) + 1, (7×7) + 1, (8×8) + 1But, 64 is out of pattern.
Question 72
10, 14, 16, 18, 21, 24, 26
A. 26
B. 24
C. 21
D. 18
View Answer
Answer: Option C
Explanation:
Each of the numbers except 21 is an even number.
Question 73
16, 25, 36, 72, 144, 196, 225
A. 36
B. 72
C. 196
D. 225
View Answer
Answer: Option B
Explanation:
Each of the numbers except 72 is a perfect square.
Question 74
331, 482, 551, 263, 383, 362, 284
A. 263
B. 383
C. 331
D. 551
View Answer
Answer: Option B
Explanation:
In each number except 383, the product of first and third digits is the middle one.
Question 75
835, 734, 642, 751, 853, 981, 532
A. 751
B. 853
C. 981
D. 532
View Answer
Answer: Option A
Explanation:
In each number except 751, the difference of third and first digit is the middle one.
Question 76
41, 43, 47, 53, 61, 71, 73, 81
A. 61
B. 71
C. 73
D. 81
View Answer
Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.
Question 77
3, 5, 7, 12, 17, 19
A. 19
B. 17
C. 5
D. 12
View Answer
Answer: Option D
Explanation:
Each of the numbers is a prime number except 12.