Question

17C4

Answer 1

\( \color{Black}{\Rightarrow\Large {17! \over (17 - 4)! 4!} }\)

Answer 2

A. 2,380

B. 680

C. 57,120

D. 4,760

Answer 3

Can you do the rest with a calculator?

Answer 4

I got D I'm i right

Answer 5

\( \color{Black}{\Rightarrow\Large {17 \times 16 \times 15 \times 14 \over 24} }\)

Answer 6

Let me check it.

Answer 7

hmm

Answer 8

Hmm no. But I can explain how I reached that step.

Answer 9

17C4 = 17! / ( 4! (17 - 4)! )

17C4 = ( 17! ) / ( 4! * 13! )

17C4 = (17 * 16 * 15 * 14) / (4 * 3 * 2 * 1)

17C4 = 2380

Answer 10

(17-4)! how to simplify this

Answer 11

\( \color{Black}{\Rightarrow \Large \binom{17}{4} = {17! \over (17 - 4)! 4!} }\)

Answer 12

I got that now :/ ? I'm not sure if I did it right.

Answer 13

yes you did

Answer 14

\( \color{Black}{\Rightarrow\Large {17! \over 13!4!} }\)

Answer 15

amazingly a sciientific calculator already has a function for this lol

Answer 16

you just have to push buttons =)) but yeah learning this process is better

Answer 17

lol okay yeah I was just wondering ^ ^ needed to know my work was good.

Answer 18

\( \color{Black}{\Rightarrow\Large {\cancel{17!}^{17 \times 16 \times 15 \times 14} \over \cancel{13!}4!} }\)

Answer 19

it was well

Answer 20

Yep it was great!

Answer 21

do you have a scientific calculator though @Esmy ?

Answer 22

Or http://wolframalpha.com ;)

Answer 23

yes.

Answer 24

you can check your work through that

Answer 25

I have a Ti - 30XA which is pretty well.

Answer 26

do you see a function that says \[nCr\]

Answer 27

But nobody can beat wolfram ♥

Answer 28

try pressing
\[17 \rightarrow nCr \rightarrow 4\]
see the magic happen

Answer 29

You have to press \(17 \Longrightarrow 2nd \Longrightarrow 8 \Longrightarrow 4\) on this one.

Answer 30

Oh okay I got it ^ ^ thanks tho for your help.

Answer 31

dont you mea 2ndF?

Answer 32

mean*