Question

Two coins are tossed together. What is the probability of getting exactly one head?

Answer 1

The possible outcomes when two coins are tossed together are {$HH,TT,HT,TH$}. Therefore, the number of possible outcomes when two coins are tossed is $4$.

Now, the possible outcomes of getting exactly one head are {$HT,TH$}, which means the number of favourable outcome is $2$.

Therefore, probability $P$ of getting exactly one head is:

$P=\frac{2}{4}=\frac{1}{2}$

Hence, the probability of getting exactly one head is $\frac{1}{2}$.