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OpenStudy (anonymous):
Four coins are tossed at the same time. What is the probability that exactly 3 heads will appear? 1/16 1/8 1/32 1/4
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OpenStudy (perl):
you want P(HHH)
OpenStudy (perl):
P(HHH) = P(H)*P(H)*P(H) = 1/2 * 1/2 * 1/2
OpenStudy (anonymous):
=0.215
OpenStudy (perl):
.125 i think
OpenStudy (anonymous):
oh ok
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OpenStudy (perl):
but your choices are given as fractions
OpenStudy (anonymous):
is the answer 1/8?
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