Question

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
1. 4
2. 3
3. 2
4. 5

Answer 1

Correct Answer - Option 2 : 3

Calculation: 

By option elimination method 

As they asked minimum take first I number of family is 2

Now try to satisfied given condition 

Adult > Boy > girl > family 

5 > 4 > 3 > 2 ( We needs this but the constraints each family is atmost 2 adults not hold here)

So, Now suppose if number of family is 3

Now try to satisfied given constraints 

Adult > Boy > girl > family 

6 > 5 > 4 > 3

Now, 3 families each have 2 adults so total 6 adults.

Each family 3 children so total 9 children (5 boys and 4 girls)

So, All condition satisfied with number of family = 3

∴ 3