Multiple choice general knowledge math & puzzles

find the number of zeroes in 127!

  1. 28

  2. 32

  3. 30

  4. 31
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D Correct answer
Explanation

Trailing zeros in n! equal the exponent of 5 in n!. For 127!: floor(127/5) + floor(127/25) + floor(127/125) = 25 + 5 + 1 = 31. This is a standard application of Legendre's formula.

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