anonymous
  • anonymous
17C4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
ParthKohli
  • ParthKohli
\( \color{Black}{\Rightarrow\Large {17! \over (17 - 4)! 4!} }\)
anonymous
  • anonymous
|dw:1342190004971:dw| A. 2,380 B. 680 C. 57,120 D. 4,760
ParthKohli
  • ParthKohli
Can you do the rest with a calculator?

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More answers

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

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