Answer the questions based on the information given below. There are seven members L, M, N, O, P, Q and R in a family of three generations. L is the mother of
M. R is the son-in-law of M, who is a single parent. Q is the father-in-law of P. P is the granddaughter of O, who has only one child. N has only one son and N is from second generation.   How many male members are there in the family?