Question 20

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 more adults than boys, more boys than girls, and more girls than families.

Then the minimum possible number of families in the locality is

Solution

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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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 more adults than boys, more boys than girls, and more girls than families. Then the minimum possible number of families in the locality is

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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 more adults than boys, more boys than girls, and more girls than families.

Then the minimum possible number of families in the locality is