Jeffrey D.

asked • 02/23/16

Probabilities!

A batch of 350 raffle tickets contains four winning tickets. You buy four tickets. What is the probability that you have (a) no winning tickets? (b) all of the winning tickets? (c) two winning tickets? (d) at least one winning ticket?

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Kenneth S. answered • 02/24/16

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I'll answer the first 3 parts & leave the last for you!
 
a) 346C4 / 350C4
 
b) 4C4 / 350C4
 
c) [4C2•346C2] / 350C4
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Jeffrey D.

Is the / symbol mean divide or multiply?
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02/24/16

Kenneth S.

/ for division; in (c), * is for multiplication
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02/24/16

Jeffrey D.

Ok so I divide the 2values and that's my answer?
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02/24/16

Kenneth S.

Whenever you have a division symbol, it means that you compute the numerator, and computer the denominator, and then divide numerator by denominator.  End of Answers.  Thanks.
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02/24/16

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