Question

C(7,4)

Answer 1

7! / 4! * 3!
= 35

Answer 2

how about C(10,7)

Answer 3

10!/ 7! * 3!

Answer 4

how do i solve it ?

Answer 5

it is combination of r from n i.e C(n,r) =n!/ [ r! * (n-r)!]

Answer 6

so plug in those numbers using the formula?

Answer 7

we were taught to mulltiply them all out and then divide

Answer 8

like 7 times 6 time 5 times 4 times 3 times 2 times 1 then divide by 4 times 3 times 2 times 1

Answer 9

yes......

Answer 10

okay

Answer 11

so i tried one its was C(9,3) i got the answer 12 is that correct?

Answer 12

it is 84

Answer 13

okay i understand it now thank you

Answer 14

u welcome