What are the possible outcomes when the coin tossed 20 times?

May 5, 2018

$n$ times heads and $20 - n$ times tails (for $20 \ge n \ge 0$)

Explanation:

Well it could be...
...$0$ times heads and $20$ times tails
...$1$ time head and $19$ times tails
...$2$ times heads and $18$ times tails
...
...$20$ times heads and $0$ times tails