HELP! There are 6 seniors on student council . Two of them will be chosen to go to an all district meeting. how many ways are there to choose the students who will go to the mee…

Question

asked Dec 12, 2020 172k views

2 Answers

Zwithouta · Answer 1 · 2020-12-17T22:58:45+0000

Answer:

Number of ways of selecting two students is 15

Explanation:

number of ways of selecting n out of r is given by

$n_{C_(r) } =(n!)/(r!(n-r)!)$

It is given that there are 6 seniors on student council.

2 students are selected for district meeting

So we have
n= 6 and
r=2

number of ways of selecting two students =
$6_{C_(2) }$

=
(6!)/(2!(6-2)!)

=
(6!)/(2!4!)=15

So we have number of ways of selecting two students is 15