There are six members in a family: C1, C2. C3, C4, C5 and C6. How many male members?

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The relation among the family members is such that
there are 2 fathers, 1 mother, 1 daughter and 3 brothers.
No person in the family is a grandmother to the other family members.
Additional information is given as follows:

C3 is the sister of C6.
C2 is the brother of C5’s husband.
C4 is the father of C1 and grandfather of C6.

How many male members are there in the family?

  • 5
  • 4
  • 3
  • 2

Схема хитра, но у меня получилось 4.

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