a data of 100 families with only 2 children were collected. 2 girls in 40 family 1 girl in 35 family 0 girls in 25 families. a family is selected at random. find the probability that the selected family has 1 girl.
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No. of families with 1 girl=35
P(selected family has 1 girl) =total outcomes favourable to the event/total no.of outcomes =35/100=0.35
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