Number series questions – Odd Man Out and Series – Odd Man Out

“Number series questions Odd Man Out and Series” list of question-answers based on number series and finding out the odd number out of it.

Que (1):
1, 3, 5, 6, 9, 11, 13, 17
A. 3
B. 9
C. 13
D. 5
Answer

B
Every other number is a prime number except 9

Que (2):
1, 4, 9, 12, 16, 25, 36
A. 12
B. 16
C. 4
D. 9
Answer

A
Every other number is a perfect square except 12.

Que (3):
1, 8, 17, 27, 64, 125, 216, 343
A. 1
B. 8
C. 216
D. 17
Answer

D
Every other number is a perfect cube except 17.

Que (4):
1, 9, 12, 15, 21, 33
A. 1
B. 9
C. 12
D. 33
Answer

C
Every other number is odd except 12

Que (5):
0, 3, 8, 15, 24, 35, 47
A. 0
B. 35
C. 47
D. 24
Answer

C
The calculation to get the following numbers is 1*1-1, 2*2-1 and so on

Que (6):
18, 45, 36, 65, 81, 108
A. 18
B. 65
C. 45
D. 108
Answer

B
Every other number is divisible by 9

Que (7):
16, 43, 52, 36, 25, 70
A. 25
B. 70
C. 36
D. 16
Answer

C
In every other combination the sum of two digits is 7.

Que (8):
0, 7, 22, 63, 124, 215, 342
A. 22
B. 0
C. 7
D. 63
Answer

A
The calculation to get the following numbers is 1*1*1-1, 2*2*2-1 and so on i.e. cube of a number minus 1.

Que (9):
78, 52, 39, 104, 119
A. 78
B. 52
C. 104
D. 119
Answer

D
All the numbers are divisible by 13 except 119.

Que (10):
2, 6, 12, 22, 30, 42
A. 22
B. 2
C. 6
D. 30
Answer

A
Answer is 1*1+1, 2*2+2, 3*3+3 and so on, hence the odd one out is 22

Que (11):
108, 117, 135, 153, 159, 162
A. 135
B. 159
C. 153
D. 162
Answer

B
All the numbers are divisible by 9 except 159.

Que (12):
263, 362, 482, 441, 555
A. 482
B. 441
C. 263
D. 555
Answer

D
Except 555 in all the other numbers the middle one is the product of the other two numbers.

Que (13):
253, 352, 462, 441, 594
A. 253
B. 441
C. 594
D. 462
Answer

B
Except 441 in all the other numbers the middle one is the sum of the other two numbers.

Que (14):
213, 347, 448, 459, 594
A. 213
B. 594
C. 459
D. 448
Answer

B
Except 594 in all the other numbers the middle one is the difference of the last and the first number.

Que (15):
5, 210, 415, 666, 885, 1015
A. 1015
B. 5
C. 666
D. 210
Answer

C
Except 666 all the numbers are divisible by 5.

Que (16):
1, 64, 81, 100, 625, 2401
A. 2401
B. 1
C. 64
D. 100
Answer

D
Except 100 all the numbers are numbers raise to the power 4 in series.

Que (17):
2, 8, 14, 18, 21, 32
A. 8
B. 14
C. 18
D. 21
Answer

D
Except 21 every other number is an even number.

Que (18):
3, 8, 15, 18, 21, 33
A. 3
B. 8
C. 15
D. 21
Answer

B
Except 8 every other number is a multiple of 3.

Que (19):
444, 555, 225, 117, 200, 1011
A. 444
B. 225
C. 1011
D. 200
Answer

D
Except 200 every other number is divisible by 3.

Que (20):
201, 1011, 102, 3, 21, 300, 2001, 200
A. 2001
B. 1011
C. 201
D. 200
Answer

D
Except 200 in every other number the sum is 3 of all the other digits.

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Number series questions Odd Man Out and Series type questions are frequently asked in various exams like govt. exams, MBA exams, job interview, written test etc.

Odd Man Out and Series type questions are also fun to try to keep ones memory sharp.

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