Each family in a locality has at most two adults, and no family has fewer than 3 children.
Considering all the families together, there are adults than boys, more boys than girls, and more girls than families.
Then the minimum possible number of families in the locality is
Consider 3 family. Let 1st one have 2 A , 1B and 2 G , 2nd one have 2 A , 2B and 1 G, 3rd one have 2 A , 2B and 1 G . SO total A-6 , B - 5 , g - 4 , F - 3 . Hence minimum is 3 .
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