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Sex Determination in Humans

In a populati...

Question

In a population of families having three children each, the percentage of population of families having both boys and girls is?

A

10

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B

25

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C

50

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D

75

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Solution

The correct option is A $75$
The concept of boys and girls could be modelled by probability. There would be 8 possible combinations - GGG, GGB, GBG, GBB, BBB, BBG, BGG, BGB, here, the combination with both girls and boys is 6, the percentage of which would be 75.

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