Multiple choice general knowledge math & puzzles

Fill the Series: 1,2,6,24,?

  1. 111

  2. 151

  3. 120

  4. 125
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C Correct answer
Explanation

The pattern is factorial: 1×1=1, 1×2=2, 2×3=6, 6×4=24, 24×5=120. Each term is obtained by multiplying the previous term by an incrementing integer.

AI explanation

The series is factorials: 1!=1, 2!=2, 3!=6, 4!=24, so the next term is 5!=120. Each term is the previous term multiplied by the next integer (×1, ×2, ×3, ×4, ×5), which is a classic factorial progression.

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