Number Series Interview Questions and Answers
Question - 31 : - 3 8 13 18 23 28 33
A. 39 44
B. 38 44
C. 38 43
D. 37 42
E. 33 38
Answer - 31 : -
Option C
Explanation:
In this simple addition series, each number is 5 greater than the previous number.
Question - 32 : - 84 78 72 66 60 54 48
A. 44 34
B. 42 36
C. 42 32
D. 40 34
E. 38 32
Answer - 32 : -
Option B
Explanation:
In this simple subtraction series, each number is 6 less than the previous number.
Question - 33 : - 20 20 17 17 14 14 11
A. 8 8
B. 11 11
C. 11 14
D. 8 9
E. 11 8
Answer - 33 : -
Option E
Explanation:
This is a simple subtraction with repetition series. It begins with 20, which is repeated, then 3 is subtracted, resulting in 17, which is repeated, and so on.
Question - 34 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
2 3 4 5 6 4 8
A. 9 10
B. 4 8
C. 10 4
D. 9 4
E. 8 9
Answer - 34 : -
Option D
Explanation:
This is an alternating addition series with a random number, 4, interpolated as every third number. In the main series, 1 is added, then 2 is added, then 1, then 2, and so on.
Question - 35 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
17 17 34 20 20 31 23
A. 26 23
B. 34 20
C. 23 33
D. 27 28
E. 23 28
Answer - 35 : -
Option E
Explanation:
This is an alternating subtraction series with repetition. There are two different patterns here. In the first, a number repeats itself; then 3 is added to that number to arrive at the next number, which also repeats. This gives the series 17, 17, 20, 20, 23, and so on. Every third number follows a second pattern, in which 3 is subtracted from each number to arrive at the next: 34, 31, 28.
Question - 36 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
6 20 8 14 10 8 12
A. 14 10
B. 2 18
C. 4 12
D. 2 14
E. 14 14
Answer - 36 : -
Option D
Explanation:
This is an alternating addition and subtraction series. In the first pattern, 2 is added to each number to arrive at the next; in the alternate pattern, 6 is subtracted from each number to arrive at the next.
Question - 37 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
21 25 18 29 33 18
A. 43 18
B. 41 44
C. 37 18
D. 37 41
E. 38 41
Answer - 37 : -
Option D
Explanation:
This is a simple addition series with a random number, 18, interpolated as every third number. In the series, 4 is added to each number except 18, to arrive at the next number.
Question - 38 : - 75 65 85 55 45 85 35
A. 25 15
B. 25 85
C. 35 25
D. 85 35
E. 25 75
Answer - 38 : -
Option B
Explanation:
This is a simple subtraction series in which a random number, 85, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
Question - 39 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
75 65 85 55 45 85 35
A. 25 15
B. 25 85
C. 35 25
D. 85 35
E. 25 75
Answer - 39 : -
Option B
Explanation:
This is a simple subtraction series in which a random number, 85, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
Question - 40 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
4 8 22 12 16 22 20 24
A. 28 32
B. 28 22
C. 22 28
D. 32 36
E. 22 26
Answer - 40 : -
Option C
Explanation:
This is an alternating repetition series, with a random number, 22, interpolated as every third number into an otherwise simple addition series. In the addition series, 4 is added to each number to arrive at the next number.