Answer:
0.75
Step-by-step explanation:
It is given that having a boy or girl as children are the two events which are equally likely.
i.e. Probability of having a boy or a girl is equal to [tex]\frac{1}{2}[/tex] or 0.5.
Let P(B) be the probability of having a boy and P(G) be the probability of having a girl child.
So, P(B) = P(G) = 0.5
To find: Probability that out of two children, atleast one boy is born.
Required probability = 1 - Probability that both the children are girls
Required probability :
[tex]\Rightarrow 1-(0.5 \times 0.5)\\\Rightarrow 1 - 0.25\\\Rightarrow 0.75[/tex]
So, the probabilty that atleast one boy is born out of two children is 0.75.
