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In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons there in the family?

In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons there in the family? Correct Answer 3

3 sons. 1 son has 2 brothers, twice of 2 brothers is 4 sisters, 1 sister has 3 sisters and 3 brothers.

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