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anonymous
 5 years ago
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
anonymous
 5 years ago
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

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It's \[\frac{4 \choose 3}{10 \choose 3}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there 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
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah, that's what I said ;p

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yup. couldn't find n choose k in the template.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I always write equations manually. It's all just latex =) { n \choose k}

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0much easier than using the editor

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thanks for the tip. {x\times y}\[\frac{a}{b}\] just testing

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You have to be sure your equation is inside the \[ \ ] bits (no space)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[x\cdot y, \forall x \in N, f(g(x)) = (f\circ g)(x)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Hrm? you are making fractions?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0trying to typed \[\frac{a}{b}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it's working for me.. (I can see a over b)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it looks good in preview but doesn't post right

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i see no fraction bar!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Sometimes 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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