Answer: Hence, the probability of having no girls is 0.0313.
Step-by-step explanation:
Since we have given that
Number of children a family has = 5
Number of outcomes would be 
Probability of having a girl = 
We need to find the probability of having no girls.
P(no girls ) = P( all boys )
So, it becomes,

Hence, the probability of having no girls is 0.0313.