There are 6 students in a club. For a certain activity, 4 of the students need to form a separate group. How many ways can this group of 4 students be formed?
1,2,3,4,5,6.
1,2,3,4.
2,3,4,5.
3,4,5,6.
4,5,6,1.
5,6,1,2.
6,1,2,3.
6 Ways.
1,2,3,4.
2,3,4,5.
3,4,5,6.
4,5,6,1.
5,6,1,2.
6,1,2,3.
6 Ways.