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1000 families with 2 children were selected randomly, and the following data were recorded:
Number of boys in a family | 0 | 1 | 2 |
Numberof families | 140 | 560 | 300 |
If a family is chosen at random, find the probability that it has (i)No boy (ii) one boy (iii) 2 boys (Iv)at least one boy (v) at most one boy
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