Missing Number Quiz
Practice quiz on Missing Number (Reasoning Ability). 5 real exam questions.
About This Quiz
Missing Number Quiz — Questions with Solutions
All 5 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Find missing number: 3, 7, 15, 31, ?
- A.63
- B.58
- C.62
- D.59
Show answer
Answer: A. 63
n*2+1 pattern.
Q2.Which number comes next: 3, 6, 12, 24, ?
- A.36
- B.48
- C.30
- D.18
Show answer
Answer: B. 48
Series doubles: 3×2=6, 6×2=12, 12×2=24, 24×2=48.
Q3.Which number completes the series: 2, 5, 10, 17, ?
- A.26
- B.27
- C.28
- D.29
Show answer
Answer: A. 26
+3,+5,+7,+9 → next +11 → 17+11 = 28 (but closest 28).
Q4.Which number is odd one out: 12, 24, 36, 50, 60?
- A.12
- B.36
- C.50
- D.60
Show answer
Answer: C. 50
50 is not a multiple of 12.
Q5.Which number completes: 5, 10, 20, 40, ?
- A.50
- B.60
- C.70
- D.80
Show answer
Answer: D. 80
×2 pattern.
Frequently Asked Questions
Is Missing Number Quiz free to attempt on AajExam?
Yes. Missing Number 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 Missing Number Quiz?
Missing Number Quiz runs on a 1-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 Missing Number 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 Missing Number 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?
Missing Number 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.