Each child in a family has at least 3 brothers and 4 sisters What is the smallest number of children the family might have ?

7

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9

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8

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10

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Solution

The correct option is B $9$
If each boy in the family has at least 3 brothers then the smallest number of boys is 4 Similarly if each girl in the family has at least 4 sisters then the smallest number of girls is 5 Thus the smallest number of children the family might have is 9

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Each child in a family has at least 3 brothers and 4 sisters What is the smallest number of children the family might have ?

The correct option is B 9If each boy in the family has at least 3 brothers then the smallest number of boys is 4 Similarly if each girl in the family has at least 4 sisters then the smallest number of girls is 5 Thus the smallest number of children the family might have is 9

The correct option is B $9$
If each boy in the family has at least 3 brothers then the smallest number of boys is 4 Similarly if each girl in the family has at least 4 sisters then the smallest number of girls is 5 Thus the smallest number of children the family might have is 9