Question

How many ways are there to select 4 cards from a standard deck of 52 cards (how many combinations are there)?

Answer 1

`52C4=(52!)/(4!·(52-4)!`

Explanation:

Those are the different ways to select 4 from 52 cards.

This expresion could be re-write in form

`52C4=(52!)/(4!·(52-4)!`

`=(52!)/(4!·48!)=(52·51·50·49)/(4!)=6497400/24=270725`