anonymous
  • anonymous
each digit 0,1,2,3,4,5,6,7,8, an 9 is writting on a slip of paper and the slips are placed in a hat. if 3 slips of paper are selected at ramdom find the probl that the 3 numbers are greater then 5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
3/10
anonymous
  • anonymous
i mean 4/10
anonymous
  • anonymous
No

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anonymous
  • anonymous
It's \[\frac{4 \choose 3}{10 \choose 3}\]
anonymous
  • anonymous
there are ten choose 3 ways to choose three numbers out of ten ten choose 3 is 10*9*8/3/2=120 . This is your denominator. There are 4 choose 3 ways to choose the 4 of the ten numbers that are greater than 5. 4 choose 3 is 4. answer is 4/120 = 1/30
anonymous
  • anonymous
Yeah, that's what I said ;p
anonymous
  • anonymous
yup. couldn't find n choose k in the template.
anonymous
  • anonymous
I always write equations manually. It's all just latex =) { n \choose k}
anonymous
  • anonymous
much easier than using the editor
anonymous
  • anonymous
thanks for the tip. {x\times y}\[\frac{a}{b}\] just testing
anonymous
  • anonymous
oops didnt work
anonymous
  • anonymous
You have to be sure your equation is inside the \[ \ ] bits (no space)
anonymous
  • anonymous
\[x \times y\]
anonymous
  • anonymous
\[\frac{a}{b}\]
anonymous
  • anonymous
damn
anonymous
  • anonymous
\[x\cdot y, \forall x \in N, f(g(x)) = (f\circ g)(x)\]
anonymous
  • anonymous
Hrm? you are making fractions?
anonymous
  • anonymous
trying to typed \[\frac{a}{b}\]
anonymous
  • anonymous
it's working for me.. (I can see a over b)
anonymous
  • anonymous
it looks good in preview but doesn't post right
anonymous
  • anonymous
i see no fraction bar!
anonymous
  • anonymous
\[x\times y\]
anonymous
  • anonymous
got one
anonymous
  • anonymous
\[{n \choose k}\]
anonymous
  • anonymous
got it
anonymous
  • anonymous
Sometimes the fraction bar doesn't show up for you when you post stuff. if you go to a different question and come back it can fix itself.

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