# Mathematics

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Three quarters are tossed, and a tail appears on at least one of them. What is the probability that at least one head appears? Express your answer as a common fraction.

I'm confused on this problem. I don't even know what the problem is asking. :D

• Mathematics -

The possible outcomes were

HHt
Htt
ttt

So, the probability of at least one head is 2/3

• Mathematics -

6/7 because 7/8 and 6/7

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