If there are two children in a family, find the probability that there is at least one boy in the family
Question:
If there are two children in a family, find the probability that there is at least one boy in the family
Solution:
We know that,
Probability of occurrence of an event
$=\frac{\text { Total no. of Desired outcomes }}{\text { Total no. of outcomes }}$
Let $B$ be Boy and $G$ be Girl
Total possible outcomes are BB, BG, GB, GG
Our desired outcome is at least one boy. So, BB, BG, GB are desired outputs.
Total no. of outcomes are 4 , and the desired outcomes are 3
Therefore, the probability of at least one boy $=\frac{3}{4}$