Question

In how many ways can you choose a committee of 7 from a total of 20 people?
Is this a combination or permutation???

Answer 1

choose/selection means combination.

\[ \binom {20} 7=77520 \]

Answer 2

Thank you

Answer 3

Glad to help :)

Answer 4

\[\large \frac{20!}{(20-7)!}\] i believe that's the formula?

Answer 5

No.

Answer 6

If it's a combination wouldn't it look more like 20!/7!(20-7)?

Answer 7

Yes.

Answer 8

Haha ok

Answer 9

:)

Answer 10

oh..then when is that formula used @FoolForMath ?

Answer 11

permutations with objects taken out

Answer 12

Arrangement or permutation.

Answer 13

oh..so my answer to a question @ParthKohli and i debated on last night was right in the first place =_= thanks fool and rox

Answer 14

[n!\div((n -r)!r!)\]

Answer 15

n!/((n - r)!r!) is the formula for a combination

Answer 16

let's say it's "if there's 4 positions and 6 people to fill the positions" is that combination?

Answer 17

No.

Answer 18

No because the spots can't be taken again by the same person.