Question

How do you find the binomial coefficient of 20C20?

Answer 1

`1`

Explanation:

`color(orange)"Reminder"`

The binomial coefficient is.

`""^nC""_r=(n!)/(r!(n-r)!`

`rArr""^(20)C""_(20)=(20!)/(20!0!`

`color(blue)"NOTE " 0! = 1`

`rArrcancel(20!)^1/(cancel(20!)^1xx1)=1`