Question

Seven friends want to play a game. They must be divided into two teams with three people in each team and one leader. In how many ways can they do it?

Answer 1

Answer:70

Explanation:

Given

total of 7 friends need to be divided in two groups with 3 member each and 1 leader

leader can be chosen out of 7 person in
`^7C_1` ways

And 3 person out of remaining 6 persons in
`^6C_3` ways

thus a total of
`^7C_1* ^6C_3` ways is possible

If order is not matter then

`(140)/(2)` ways are possible