probability

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probability

by faraday88 » Wed Aug 15, 2012 10:44 am
Three coins are tossed. Find the probability that they all land heads up given that at least one coin shows a head.
Is answer 1/7?

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by cypherskull » Wed Aug 15, 2012 10:56 am
Can u please post the answer choices given?
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by rijul007 » Wed Aug 15, 2012 1:06 pm
H H T
H T H
T H H
H T T
T H T
T T H
H H H

Total number of cases = 7
Probability = 1/7