Asked by Mary Ann
Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.) I came up with 7/8
Thank you
Thank you
Answers
Answered by
Damon
find probability that NONE are heads
(1/2)^3 = 1/8
so we want
1 - 1/8 = 7/8 agree with you
(1/2)^3 = 1/8
so we want
1 - 1/8 = 7/8 agree with you
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