Question 427603

no. of ways to select 5 out of 20 without any restriction = 20C5

no. of ways to select 5 male out of 12 , not any female = 12C5

no. of ways to select 5 female out of 8, not any male = 8C5


total number of ways when at least one male and one female = 20C5 - 12C5 - 8C5