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Help with Probability Word Problem4

Algebra
Tutor: None Selected Time limit: 0 Hours

What is the probability of obtaining exactly three tails in four flips of a coin, given that at least two are tails? (Enter the probability as a fraction.)

Dec 2nd, 2014

TTTH  HTTT  THTT  TTHT

Required probability = 4 /16

                                = 1/4

Dec 2nd, 2014

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Dec 2nd, 2014
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Dec 2nd, 2014
Dec 9th, 2016
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