Question

Three coins are tossed simultaneously $200$ times with the following frequencies of different outcomes. If the three coins are simultaneously tossed again, compute the probability of $2$ heads coming up.

Outcome	$3$ heads	$2$heads	$1$ head	No head
Frequency	$23$	$72$	$77$	$28$

Answer 1

We have to find the probability of $2$ heads coming up
Number of times 2 heads come up$=72$

Total number of times the coins were tossed$=200$

Thus, the probability of $2$ heads coming up :

$\frac{72}{200}=\frac{9}{25}$.
Hence, the probability of $2$ heads coming up $\frac{9}{25}$.