Question

(vi)
In a village there are 87 families of which 52 families have at most 2 children. In a rural development programme 20 families are to be helped. Chosen for assistance of which at least 18 families must have at most 2 children. In how many ways can the choice be made?​

Answer 1

Answer:

It is given that there are 87 families in total out of which 52 families have at most 2 children. Then the number of families with more than 2 children is 87 – 52 which is 35. For the rural development program, 20 families are to be chosen, of which at least 18 families must have at most 2 children

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