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Mathematics 20 Online
OpenStudy (anonymous):

easy question please help!! medal and fan!! A number cube labeled 1 through 6 is rolled three times. What is the probability that the first roll is a 1, the second roll is a 2, and the third roll is greater than 4?

OpenStudy (anonymous):

options are: a) 2/3 b) 2/9 c) 1/108 d) 1/216 i got 2/3 but i know thats way too high a number for that possibility lol

OpenStudy (perl):

hint: these are independent events ,

OpenStudy (anonymous):

1/108

OpenStudy (anonymous):

can you explain @pianopounder ??

OpenStudy (perl):

P ( roll a 1 & then roll a 2 and then roll greater than 4) = P(roll 1 ) * P( roll a 2) * P ( roll a 5 or 6 ) = 1/6 * 1/6 * 2/6

OpenStudy (anonymous):

thank you!!!! :D

OpenStudy (perl):

@pianopounder please don't give out answers

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