But It's Not A Combination!

Probability Level 1

True or False?

\quad 100!20!  81! \dfrac{100!}{20! \; 81!} is an integer.

Notation: !! is the factorial notation. For example, 8!=1×2×3×⋯×88! = 1\times2\times3\times\cdots\times8 .

Milind Prabhu by milind prabhu
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