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Mathematics 7 Online
OpenStudy (anonymous):

What is the probability of rolling a sum of 8 on at least one of two rolls of a pair of number cubes? 335/1296 25/1296 4/81 5/18

OpenStudy (anonymous):

The probability of rolling a sum of 8 on one roll of a pair of dice is 5/36. So, 25/1296?

OpenStudy (anonymous):

5/36 = 25/1296 :)

OpenStudy (anonymous):

Those aren't equal...

OpenStudy (anonymous):

25/1296 doesn't reduce

OpenStudy (anonymous):

None of them reduce, so how do I figure this out?

OpenStudy (anonymous):

25/1296 looks right.

OpenStudy (anonymous):

Oh, sorry, I got confused. Thanks.

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