There are 21 ways you can pick a team of 5 people from a group of 7.
This can be calculated using the combination formula:
nCr = n! / r!(n-r)!
In this case, n is 7 (the total number of people) and r is 5 (the number of people being picked for the team).
7C5 = 7! / 5!(7-5)!
= 7! / 5!2!
= (7 x 6 x 5 x 4 x 3) / (2 x 1)
= 21
Therefore, there are 21 ways you can pick a team of 5 people from a group of 7.
You are picking a team of 5 people from a group of 7. How many ways can you do it?
1 answer