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PIMSO 2025 - Mathematics - Secondary 1 - National Round Question 3

PIMSO Maths · PIMSO 2025 - Mathematics - Secondary 1 - National Round

Question 3

How many times can you multiply 20 by itself in 30!?

$n!=n\times(n-1)\times(n-2)\times\cdots\times1$
  1. 8
  2. 7
  3. 6
  4. 5