50+ Number Series Difficult Questions With Solution

Number series is the very important part of Reasoning topics. In this post you will learn or practice, the examples of Number Series Difficult Questions with solution. It will help to understand better what type of Difficult Number Series Reasoning Questions are asked in UPSC level competitive exam. Number series Questions is a single pair or a group of series which is followed by the combination of letters and numbers. So you are required to identify this pattern as well as find the missing term or the wrong tern in a given series. Lets understand examples of Number Series Reasoning Questions and answers

Examples Of Number Series Difficult Questions With Solution

In each of the following Number Series Difficult Questions is given with one missing term. Choose the correct alternative from the given one that will complete the series.

Q-1. Series supporting a square cube?
1, 2, 6, 33 , 49, ?

(A) 74
(B) 124
(C) 176
(D) 174

View Answer and Solution 

Answer: (D) 174
Solution:

Q-2. Series supported decimal number- then generally its solution starts with 5 or 1.5 In most of the cases
12, 6.5, 7.5, 12.75, ?

(A) 27.75
(B) 27.50
(C) 38.25
(D) 26.75

View Answer and Solution 

Answer: (B) 27.50
Solution: Series supported multiplication- if suddenly number increase in bulk then we use this method

Q-3. Find the missing number and complete the series.
1, 10, 28, 91, 370, ?

(A) 1070
(B) 1850
(C) 1855
(D) 1775

View Answer and Solution 

Answer: (C) 1855
Solution: Series supported multiplication- if suddenly number increase in bulk then we use this method

Q-4. Find the missing number from the given series.
70, 40, 50, 90, 200, ?

(A) 525
(B) 500
(C) 425
(D) 520

View Answer and Solution 

Answer: (A) 525
Solution: Half pattern series- every second number is simply 1/2 first number and third number is simply near about second number then this sort of series always start with multiplication of 0.5

Q-5. Find the missing number and complete the series.
12, 12, 18, 45, 180, ?

(A) 540
(B) 1070
(C) 920
(D) 1080

View Answer and Solution 

Answer: (D) 1080
Solution: completely divisible series- if the following number is totally divisible by the previous number then we use this series.

Number Series Difficult Questions For Competitive Exam

Q-6. Find the missing number from the given series.
2, 10, 30, 38, 130 ?

(A) 218
(B) 216
(C) 222
(D) 92

View Answer and Solution 

Answer: (C) 222
Solution: Different series

Q-7. Complete the given series
3125, 256, ?, 4, 1

(A) 27
(B) 64
(C) 11
(D) 25

View Answer and Solution 

Answer: (A)
Solution:

Q-8. Find the correct number followed by series
2, 3, 6, 18, 108, ?

(A) 1938
(B) 1944
(C) 970
(D) 1954

View Answer and Solution 

Answer: (B) 1944
Solution:
2 x 3 =6
3 x 6 =18
6 x 18 = 108
18 x 108 =1944

Q-9. Find the missing number and complete the series.
6, 9, 22.5, 90 ?

(A) 180
(B) 270
(C) 540
(D) 480

View Answer and Solution 

Answer: (C) 540
Solution:

Q-10. Find the correct number and complete the series
150, 252, 392, 576, 810, ?

(A) 1070
(B) 1080
(C) 1100
(D) 1160

View Answer and Solution 

Answer: (C) 1100
Solution: