Question

There are 3 children in the khanna's family and it is known that there is at least 1 girl among the 3 children. what is the probability that all 3 of them are girls?

Answer 1

the chances are there for 1 girl, 2 girls, and 3 girls.
.:chances[n(s)]= 3
favourable results[n(p)]= 1
.:probability= n(p)/n(s)
=>[1/3 (or) 33.33%] (ans.)