Number Series Interview Questions and Answers
Question - 61 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
17 14 14 11 11 8 8
A. 8 5
B. 5 2
C. 8 2
D. 5 5
E. 5 8
Answer - 61 : -
Option D
Explanation:
In this simple subtraction with repetition series, each number is repeated, then 3 is subtracted to give the next number, which is then repeated, and so on.
Question - 62 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
10 34 12 31 14 28 16
A. 25 18
B. 30 13
C. 19 26
D. 18 20
E. 25 22
Answer - 62 : -
Option A
Explanation:
Two patterns alternate here. The first pattern begins with 10 and adds 2 to each number to arrive at the next; the alternating pattern begins with 34 and subtracts 3 each time.
Question - 63 : - Look carefully for the pattern, and then choose which pair of numbers comes next.
11 14 14 17 17 20 20
A. 23 23
B. 23 26
C. 21 24
D. 24 24
E. 24 27
Answer - 63 : -
Option A
Explanation:
This is a simple addition series with repetition. It adds 3 to each number to arrive at the next, which is repeated before 3 is added again.
Question - 64 : - Look at this series: F2, __, D8, C16, B32, ... What number should fill the blank?
A. A16
B. G4
C. E4
D. E3
Answer - 64 : -
Option C
Explanation:
The letters decrease by 1; the numbers are multiplied by 2.
Question - 65 : - Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?
A. 85
B. 97
C. 109
D. 178
Answer - 65 : -
Option D
Explanation:
This is an alternating division and addition series: First, divide by 2, and then add 8.
Question - 66 : - Look at this series: V, VIII, XI, XIV, __, XX, ... What number should fill the blank?
A. IX
B. XXIII
C. XV
D. XVII
Answer - 66 : -
Option D
Explanation:
This is a simple addition series; each number is 3 more than the previous number.
Question - 67 : - Look at this series: 70, 71, 76, __, 81, 86, 70, 91, ... What number should fill the blank?
A. 70
B. 71
C. 80
D. 96
Answer - 67 : -
Option A
Explanation:
In this series, 5 is added to the previous number; the number 70 is inserted as every third number.
Question - 68 : - Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?
A. 8
B. 14
C. 43
D. 44
Answer - 68 : -
Option B
Explanation:
This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2.
Question - 69 : - Look at this series: J14, L16, __, P20, R22, ... What number should fill the blank?
A. S24
B. N18
C. M18
D. T24
Answer - 69 : -
Option B
Explanation:
In this series, the letters progress by 2, and the numbers increase by 2.
Question - 70 : - Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?
A. 13
B. 15
C. 20
D. 28
Answer - 70 : -
Option A
Explanation:
Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.