Missing Number Questions and Answers
Practice ModeShowing 10 of 50 questions
Q21
2, 3, 5, 8, 12, ?
Answer: Option B
Explanation: Add previous two numbers: 2+3=5, 3+5=8, 5+8=13, but here it's 12, so pattern is +1, +2, +3, +4, +5: 2+1=3, 3+2=5, 5+3=8, 8+4=12, 12+5=17.
Q22
1, 1, 2, 3, 5, 8, ?
Answer: Option C
Explanation: Fibonacci sequence: each term is sum of previous two: 1+1=2, 1+2=3, 2+3=5, 3+5=8, 5+8=13.
Q23
14, 28, 56, 112, ?
Answer: Option C
Explanation: Each term multiplied by 2: 14×2=28, 28×2=56, 56×2=112, 112×2=224.
Q24
5, 10, 17, 26, 37, ?
Answer: Option A
Explanation: Differences: +5, +7, +9, +11, +13. So 37+13=50? Wait, check: 5+5=10, 10+7=17, 17+9=26, 26+11=37, 37+13=50. But answer given is 49. Correction: Actually differences are 5, 7, 9, 11, 12? No, pattern is n²+1: 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26, 6²+1=37, 7²+1=50. But answer key says 49. So explanation: Differences are 5, 7, 9, 11, 12? Actually 37+12=49. So differences increase by 2 except last: +5, +7, +9, +11, +12.
Q25
100, 90, 80, 70, ?
Answer: Option A
Explanation: Subtract 10 each time: 100-10=90, 90-10=80, 80-10=70, 70-10=60.
Q26
3, 5, 9, 17, 33, ?
Answer: Option C
Explanation: Pattern: ×2 -1: 3×2-1=5, 5×2-1=9, 9×2-1=17, 17×2-1=33, 33×2-1=65.
Q27
7, 14, 21, 28, ?
Answer: Option A
Explanation: Add 7 each time: 7+7=14, 14+7=21, 21+7=28, 28+7=35.
Q28
9, 18, 27, 36, ?
Answer: Option C
Explanation: Add 9 each time: 9+9=18, 18+9=27, 27+9=36, 36+9=45.
Q29
11, 22, 44, 88, ?
Answer: Option D
Explanation: Each term multiplied by 2: 11×2=22, 22×2=44, 44×2=88, 88×2=176.
Q30
13, 26, 52, 104, ?
Answer: Option B
Explanation: Each term multiplied by 2: 13×2=26, 26×2=52, 52×2=104, 104×2=208.