Number Series Interview Questions and Answers
Question - 41 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
40 40 31 31 22 22 13
A. 13 4
B. 13 5
C. 4 13
D. 9 4
E. 4 4
Answer - 41 : -
Option A
Explanation:
This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.
Question - 42 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
1 10 7 20 13 30 19
A. 26 40
B. 29 36
C. 40 25
D. 25 31
E. 40 50
Answer - 42 : -
Option C
Explanation:
Here, every other number follows a different pattern. In the first series, 6 is added to each number to arrive at the next. In the second series, 10 is added to each number to arrive at the next.
Question - 43 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
10 20 25 35 40 50 55
A. 70 65
B. 60 70
C. 60 75
D. 60 65
E. 65 70
Answer - 43 : -
ption E
Explanation:
This is an alternating addition series, in which 10 is added, then 5, then 10, and so on.
Question - 44 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
42 40 38 35 33 31 28
A. 25 22
B. 26 23
C. 26 24
D. 25 23
E. 26 22
Answer - 44 : -
Option C
Explanation:
This is an alternating subtraction series in which 2 is subtracted twice, then 3 is subtracted once, then 2 is subtracted twice, and so on.
Question - 45 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
6 10 14 18 22 26 30
A. 36 40
B. 33 37
C. 38 42
D. 34 36
E. 34 38
Answer - 45 : -
Option E
Explanation:
This simple addition series adds 4 to each number to arrive at the next.
Question - 46 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
8 12 9 13 10 14 11
A. 14 11
B. 15 12
C. 8 15
D. 15 19
E. 8 5
Answer - 46 : -
Option B
Explanation:
This is an alternating addition and subtraction series, in which the addition of 4 is alternated with the subtraction of 3.
Question - 47 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
36 31 29 24 22 17 15
A. 13 11
B. 10 5
C. 13 8
D. 12 7
E. 10 8
Answer - 47 : -
Option E
Explanation:
This is an alternating subtraction series, which subtracts 5, then 2, then 5, and so on.
Question - 48 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
3 5 35 10 12 35 17
A. 22 35
B. 35 19
C. 19 35
D. 19 24
E. 22 24
Answer - 48 : -
Option C
Explanation:
This is an alternating addition series, with a random number, 35, interpolated as every third number. The pattern of addition is to add 2, add 5, add 2, and so on. The number 35 comes after each "add 2" step/
Question - 49 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
7 9 66 12 14 66 17
A. 19 66
B. 66 19
C. 19 22
D. 20 66
E. 66 20
Answer - 49 : -
Option A
Explanation:
This is an alternating addition series with repetition, in which a random number, 66, is interpolated as every third number. The regular series adds 2, then 3, then 2, and so on, with 66 repeated after each "add 2" step.
Question - 50 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
3 8 10 15 17 22 24
A. 26 28
B. 29 34
C. 29 31
D. 26 31
E. 26 32
Answer - 50 : -
Option C
Explanation:
This is an alternating addition series that adds 5, then 2, then 5, and so on.