Question

Type the correct answer in the box. If necessary, use / for the fraction bar. A fair coin is tossed 5 times in a row. The exact probability of the coin landing heads exactly 2 times is .

Answer 1

Answer:

2/5

Step-by-step explanation:

Answer 2

Answer:

The probability is $\frac{5}{16}$

Step-by-step explanation:

Given is that a fair coin is tossed 5 times in a row.

This gives total number of outcomes as = $2\times2\times2\times2\times2=32$

As its needed that heads comes exactly 2 times, so favorable outcomes are = 5C2

$\frac{5!}{2!(5-2)!}$

Solving this we get 10

Therefore, the probability of getting heads exactly 2 times is =

$\frac{10}{32}=\frac{5}{16}$