There are 7 boys and 13 girls in a class. 6 students have to be chosen for an educational trip. Find the number of ways in which this can be done if 3 particular girls are always included.
1
720
2
680
3
700
4
620
5
740
There are 7 boys and 13 girls in a class. 6 students have to be chosen for an educational trip. Find the number of ways in which this can be done if 3 particular girls are always included.