Question

A person tosses a coin 20 times. And how many ways can you get 20 tails

Answer 1

Given:

$Number\text{ of toss= 20}$

To Determine: The number of ways of getting 20 tails

Solution

For every toss, we can either get a head or a tail

For a toss of 20 times, we can either get head or tail in

$\begin{gathered} 2^{20}-times \\ =1048576-times \end{gathered}$

The number of ways of getting 20 tails is

$^{20}C_{20}-ways$$^{20}C_{20}=\frac{20!}{20!(20-20)!}=\frac{20!}{20!0!}=1$

Hence, the number of ways of getting 20 tails from a person who tosses a coin twenty times is just ONE(1) WAY