# 1500 families with 2 children were selected randomly, and the following data were recorded:Compute the probability of a family, chosen at random, having(i) 2 girls(ii) 1 girl(iii) No girlAlso check whether the sum of these probabilities is 1.

Total number of families = 1500

(i) Numbers of families having two girls = 475

The probability of families having two girls will be,

(ii) Number of families having one girl = 814

The probability of families having one girl will be,

(iii) Number of families having zero girls = 211

The probability of families having zero girls will be,

Sum of probabilities

Hence,

Yes, the sum of these probabilities is 1.

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