Missing Number Questions and Answers

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Q1
3, 6, 12, 24, ?
  • A A) 36
  • B B) 46
  • C C) 48
  • D D) 60
Answer: Option C
Explanation: Each term is multiplied by 2 to get the next term: 3×2=6, 6×2=12, 12×2=24, 24×2=48.
Q2
5, 10, 20, 40, ?
  • A A) 60
  • B B) 70
  • C C) 80
  • D D) 100
Answer: Option C
Explanation: Each term is multiplied by 2: 5×2=10, 10×2=20, 20×2=40, 40×2=80.
Q3
2, 6, 12, 20, 30, ?
  • A A) 40
  • B B) 42
  • C C) 45
  • D D) 50
Answer: Option B
Explanation: Differences between terms: 4, 6, 8, 10, 12. So 30+12=42.
Q4
1, 4, 9, 16, 25, ?
  • A A) 30
  • B B) 35
  • C C) 36
  • D D) 49
Answer: Option C
Explanation: Perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36.
Q5
4, 9, 16, 25, ?
  • A A) 36
  • B B) 30
  • C C) 42
  • D D) 40
Answer: Option A
Explanation: Squares of consecutive integers: 2²=4, 3²=9, 4²=16, 5²=25, 6²=36.
Q6
7, 14, 28, 56, ?
  • A A) 84
  • B B) 100
  • C C) 112
  • D D) 120
Answer: Option C
Explanation: Each term multiplied by 2: 7×2=14, 14×2=28, 28×2=56, 56×2=112.
Q7
1, 3, 6, 10, 15, ?
  • A A) 20
  • B B) 21
  • C C) 22
  • D D) 24
Answer: Option B
Explanation: Triangular numbers: add consecutive integers: 1+2=3, 3+3=6, 6+4=10, 10+5=15, 15+6=21.
Q8
9, 18, 36, 72, ?
  • A A) 90
  • B B) 100
  • C C) 108
  • D D) 144
Answer: Option D
Explanation: Each term multiplied by 2: 9×2=18, 18×2=36, 36×2=72, 72×2=144.
Q9
3, 9, 27, 81, ?
  • A A) 162
  • B B) 243
  • C C) 324
  • D D) 405
Answer: Option B
Explanation: Each term multiplied by 3: 3×3=9, 9×3=27, 27×3=81, 81×3=243.
Q10
1, 2, 4, 8, 16, ?
  • A A) 24
  • B B) 28
  • C C) 30
  • D D) 32
Answer: Option D
Explanation: Each term multiplied by 2: 1×2=2, 2×2=4, 4×2=8, 8×2=16, 16×2=32.

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