Logical Series Quiz
Practice quiz on Logical Series (Reasoning). 10 exam-style questions with explanations.
About This Quiz
Logical Series Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Find the next: 3, 6, 12, 24, ?
- A.36
- B.48
- C.42
- D.30
Show answer
Answer: B. 48
x2.
Q2.Find the next: 1, 1, 2, 3, 5, 8, ?
- A.13
- B.11
- C.12
- D.10
Show answer
Answer: A. 13
Fibonacci.
Q3.Find the next: 2, 3, 5, 7, 11, ?
- A.12
- B.15
- C.14
- D.13
Show answer
Answer: D. 13
Primes.
Q4.Find the next: A1, B2, C3, D4, ?
- A.E4
- B.D5
- C.E5
- D.F6
Show answer
Answer: C. E5
Letter and number advance.
Q5.Find the next: 10, 20, 40, 80, ?
- A.160
- B.120
- C.100
- D.140
Show answer
Answer: A. 160
x2.
Q6.Find the next: AZ, BY, CX, DW, ?
- A.FU
- B.EU
- C.DV
- D.EV
Show answer
Answer: D. EV
Forward and backward.
Q7.Find the next: 4, 9, 16, 25, ?
- A.30
- B.35
- C.49
- D.36
Show answer
Answer: D. 36
Squares.
Q8.Find the next: 11, 22, 33, 44, ?
- A.55
- B.45
- C.54
- D.66
Show answer
Answer: A. 55
Add 11.
Q9.Find the next: J, K, M, P, ?
- A.T
- B.S
- C.R
- D.U
Show answer
Answer: A. T
Gaps 1,2,3,4.
Q10.Find the next: 5, 11, 23, 47, ?
- A.90
- B.94
- C.93
- D.95
Show answer
Answer: D. 95
x2 + 1.
Frequently Asked Questions
Is Logical Series Quiz free to attempt on AajExam?
Yes. Logical Series Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.
How long does it take to complete Logical Series Quiz?
Logical Series Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Logical Series Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Logical Series Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Number Series questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.