A + B means A is the brother of B; A - B means A is the wife of B; and A * B means A is the mother of B. which of the following means M is the brother-in-law of P?
In a joint family, there are father, mother, 3 married sons and one unmarried daughter. Of the sons two have 2 daughters each and one has a son. How many female members are there in the family?