(Solved): There are 4 girls and 6 boys in a focus group. (a) In how many ways can a student be selected? (b) ...

There are 4 girls and 6 boys in a focus group. (a) In how many ways can a student be selected? (b) In how many ways a team of 1 girl and 1 boy can be selected? (c) In how many ways a team of 4 students consisting of at least 1 girl can be selected? (d) Now the class is going to take a photo, (i) in how many ways can they be seated in a row? (ii) in how many ways can they be seated in a row that all the girls are always together?