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\( \color{Black}{\Rightarrow\Large {17! \over (17 - 4)! 4!} }\)
|dw:1342190004971:dw| A. 2,380 B. 680 C. 57,120 D. 4,760
Can you do the rest with a calculator?

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Other answers:

I got D I'm i right
\( \color{Black}{\Rightarrow\Large {17 \times 16 \times 15 \times 14 \over 24} }\)
Let me check it.
hmm
Hmm no. But I can explain how I reached that step.
17C4 = 17! / ( 4! (17 - 4)! ) 17C4 = ( 17! ) / ( 4! * 13! ) 17C4 = (17 * 16 * 15 * 14) / (4 * 3 * 2 * 1) 17C4 = 2380
(17-4)! how to simplify this
\( \color{Black}{\Rightarrow \Large \binom{17}{4} = {17! \over (17 - 4)! 4!} }\)
I got that now :/ ? I'm not sure if I did it right.
yes you did
\( \color{Black}{\Rightarrow\Large {17! \over 13!4!} }\)
amazingly a sciientific calculator already has a function for this lol
you just have to push buttons =)) but yeah learning this process is better
lol okay yeah I was just wondering ^ ^ needed to know my work was good.
\( \color{Black}{\Rightarrow\Large {\cancel{17!}^{17 \times 16 \times 15 \times 14} \over \cancel{13!}4!} }\)
it was well
Yep it was great!
do you have a scientific calculator though @Esmy ?
Or http://wolframalpha.com ;)
yes.
you can check your work through that
I have a Ti - 30XA which is pretty well.
do you see a function that says \[nCr\]
But nobody can beat wolfram ♥
try pressing \[17 \rightarrow nCr \rightarrow 4\] see the magic happen
You have to press \(17 \Longrightarrow 2nd \Longrightarrow 8 \Longrightarrow 4\) on this one.
Oh okay I got it ^ ^ thanks tho for your help.
dont you mea 2ndF?
mean*
You just have to type out 17C4 on Wolfram.
All scientific calculators differ.
i've never heard of a function that says 2nd only though
\(\text{WolframAlpha} > \text{A boring and tedious scientific calculator}\)
usually it's 2ndF or shift
bringing calculator > bringing iPad lol
Typing http://wolframalpha.com > bringing a scientific calculator. :P

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