1.

7. Dheeraj has twice as many sisters as he hasbrothers. If Deepa, Dheeraj's sister has the sâmenumber of brothers as she has sisters, then Deepahas how many brothers?

Answer»

There are 3 brothers and 4 sisters in total.

s=sister, b=brother

Dheeraj has twice as many sisters as he has brothers2(b-1)=s...............A

Dheeraj 's sister has the same number of brothers as she has sisterss-1=b.....................B

Solving equation A and B, we get,

s=4, b=3



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