there are 28 students .4 of them are choosen to be the first speaker ,second speaker ,third speaker and last speaker in the debate team
how many ways are there to form the debate team
There are 28 ways to chose the first, 27 ways to chose the second, 26 ways for the third, and 25 ways for the last.
$${\mathtt{28}}{\mathtt{\,\times\,}}{\mathtt{27}}{\mathtt{\,\times\,}}{\mathtt{26}}{\mathtt{\,\times\,}}{\mathtt{25}} = {\mathtt{491\,400}}$$
