Missing Number Questions and Answers

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Q11
2, 4, 8, 16, 32, ?
  • A A) 48
  • B B) 50
  • C C) 64
  • D D) 66
Answer: Option C
Explanation: Each term multiplied by 2: 2×2=4, 4×2=8, 8×2=16, 16×2=32, 32×2=64.
Q12
10, 20, 40, 80, ?
  • A A) 100
  • B B) 120
  • C C) 160
  • D D) 200
Answer: Option C
Explanation: Each term multiplied by 2: 10×2=20, 20×2=40, 40×2=80, 80×2=160.
Q13
2, 5, 10, 17, 26, ?
  • A A) 35
  • B B) 37
  • C C) 38
  • D D) 40
Answer: Option B
Explanation: Differences: 3, 5, 7, 9, 11. So 26+11=37.
Q14
11, 13, 17, 19, 23, ?
  • A A) 25
  • B B) 27
  • C C) 29
  • D D) 31
Answer: Option C
Explanation: Prime numbers sequence: 11, 13, 17, 19, 23, 29.
Q15
4, 8, 16, 32, 64, ?
  • A A) 100
  • B B) 128
  • C C) 256
  • D D) 512
Answer: Option B
Explanation: Each term multiplied by 2: 4×2=8, 8×2=16, 16×2=32, 32×2=64, 64×2=128.
Q16
3, 6, 9, 12, 15, ?
  • A A) 18
  • B B) 20
  • C C) 22
  • D D) 24
Answer: Option A
Explanation: Add 3 each time: 3+3=6, 6+3=9, 9+3=12, 12+3=15, 15+3=18.
Q17
5, 15, 45, 135, ?
  • A A) 180
  • B B) 270
  • C C) 405
  • D D) 540
Answer: Option C
Explanation: Each term multiplied by 3: 5×3=15, 15×3=45, 45×3=135, 135×3=405.
Q18
8, 16, 24, 32, 40, ?
  • A A) 44
  • B B) 46
  • C C) 48
  • D D) 50
Answer: Option C
Explanation: Add 8 each time: 8+8=16, 16+8=24, 24+8=32, 32+8=40, 40+8=48.
Q19
1, 8, 27, 64, 125, ?
  • A A) 216
  • B B) 225
  • C C) 250
  • D D) 300
Answer: Option A
Explanation: Cubes of consecutive integers: 1³=1, 2³=8, 3³=27, 4³=64, 5³=125, 6³=216.
Q20
6, 11, 21, 36, 56, ?
  • A A) 81
  • B B) 80
  • C C) 76
  • D D) 85
Answer: Option A
Explanation: Differences: +5, +10, +15, +20, +25. So 56+25=81.

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