Answer the questions based on the information given below. There are seven persons L, M, N, O, P, Q and R in the family of three generations. No single person in the family is a parent. There are only two married couples in the family. L is the only granddaughter of Q. O is the sister-in-law of
M. O does not have any siblings. O is not married to Q. P is the maternal grandmother of R. M is a female. How many female members are there in the family?