List of top Logical Reasoning Questions on Series

Find the wrong term in the letter-number series: Q1F, S2E, U6D, W12C, Y88B
Which of the following will replace the question mark (?) in the series AZ, GT, MN, ?, YB
Find the missing term in the following series: 1, 3, 4, 9, ___, 27, 10
Which term of the series 5, 10, 20, 40, ..... is 1280?
Select the number that can come in place of the question mark (?) in the following series: $$ 3,\ 7,\ 15,\ 31,\ 63,\ ? $$
OTE, PUF, QVG, RWH,?
AB, BA, ABC, CBA, ABCD, ?
A, Z, X, B, V, T, C, R, ?, ?
Choose that set of numbers from the alternatives that is similar to the given set. (9, 27, 81)
Choose the missing term of the series from the given alternatives: HZ0L, K19H, N19E, Q20C, ?
Find the missing term of the series: AT, BJ, CK, ?
Complete the series by replacing the question mark: ABD, DGK, HMS, MTB, ?

Look at this series: 
U32, V29, ____, X23, Y20, .... 
What number should fill the blank?

A person writes all the numbers from 0 to 99. The number of times digit 3 will be written is:

Fill in the blank: 
257, 291, ______, 365, 405

Identify the missing number:
1 and 3, 4 and 6, 7 and 9, …. and 12
53, 50, 45, 38, 29, ____
20, 30, 42, 56, 72, ____
Fill in the blank:
Q4RT, ______, QRT6, QR7T, Q8RT
Fill in the blank :
257, 291, ______ , 365, 405
If \(1 × 7 = 8, 2 × 7 = 16, 3 × 7 = 24, 4 × 7 = 32\), then what is value of \(9 × 7\)?
Identify the missing number:
1 and 3, 4 and 6, 7 and 9, ___ and 12
Examine the following numbers and identify the next number:
53, 50, 45, 38, 29, _____
Examine the following numbers and identify the next number:
20, 30, 42, 56, 72, ____
Fill in the blank :
Q4RT, ______ , QRT6, QR7T, Q8RT