A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family? follow for more riddles
Answers
Answer:
So, it makes the statement true that the girl has as many brothers as sisters. each brother has only half as many brothers as sisters. Therefore the answer is : The family has 4 daughters (sisters) and 3 sons (brothers)
Answer:
From the reference frame of one of the sisters, there are n sisters and n brothers.
However, from the reference frame of a parent, we see the sister did not include herself in the counting.
This means that there are n boys and n+1 girls.
From the reference frame of one of the brothers, there are n-1 brothers (since he wouldn’t count himself), and n+1 sisters. Also, each brother sees k brothers and 2k sisters.
As a result, we can combine these deductions to create the equation 2(n-1) = n+1. Solving, we find n=3.
Final Answer: There are 3 brothers and 4 sisters.