Question

What is the value of 12C5 ?

A.
120

B.
60

C.
95,040

D.
792

Answer 1

What is the value for c?

Answer 2

12!/5!

Answer 3

12*11*10*9*8
------------
5*4*3*2*1

Answer 4

thats not a option @triciaal quit using google to try to find the answer and work it out

Answer 5

^

Answer 6

i did not use google

Answer 7

$$
12 C 5 = \frac{12!}{(12-5)! ~5!}
$$

Answer 8

funny cause i just looked it up and it just so happened to give me the "answer" that you gave

Answer 9

it is just what the notation means from what i remember

Answer 10

$$ \Large
nCr = \frac{n!}{(n-r)! ~r!}

$$

Answer 11

no i think that the notation for 12P5
- permutations not combinations

Answer 12

i was trying to remember if i need the 7! like @ perl indicated

Answer 13

$$ \Large
nPr = \frac{n!}{(n-r)! }

$$

Answer 14

oh right

Answer 15

hopefully i remembered correctly :)

Answer 16

the method i used is a simplification of
n!
---
(n-r)! r!

Answer 17

I am not perfect I do make mistakes but I don't appreciate being accused of using google

Answer 18

yes

Answer 19

This is a learning website, mistakes happen ( I make them ). No need for accusations.

Answer 20

thanks for helping

Answer 21

yw