A fair die will be rolled 12 times. what is the probability that 4, 5, or 6 is rolled less than 6 but more than 3 times

Question

Mathematics

Cristian Chang

28 October, 07:13

A fair die will be rolled 12 times. what is the probability that 4, 5, or 6 is rolled less than 6 but more than 3 times

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Answers (1)

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Guillermo Green · Answer 1

P (4,5 or 6) = 3/6=1/2 and we need to find

P (4 times or 5 times ... getting 4,5 or 6) = P (4 times ...) + P (5 times ...)

= (1/2) ^12 + (1/2) ^12 = (1/2) ^11

i'm not very sure if its correct. but, u can use this as your last resort. something is better than nothing. and let me know if its right.