In problem 1 the question is they must be the same sex that means either male or female there can either 4 male or female and in problem 2 the question is persons of both sexes that means both sexes are included here so here possibilities because we have to include both genders
Mam I first problem to find the combination for both sexes you didn't use possibilities
But why did you use possibilities in problem 2
Kindly clarify
In problem 1 the question is they must be the same sex that means either male or female there can either 4 male or female and in problem 2 the question is persons of both sexes that means both sexes are included here so here possibilities because we have to include both genders
@@mehtabalam554 thank you
Tqs