Help with Algebra QuestionA

Algebra
Tutor: None Selected Time limit: 1 Day

Two fair coins are tossed. What is the probability that at least one is a tail? (Enter the probability as a fraction.)

Dec 12th, 2014

2 heads....has at least one head 
1 head, 1 tail...has at least one head 
1 tail, 1 head...has at least one head 
2 tails...does not have at least one head 
P(at least one head in two tosses) = 3/4

Dec 12th, 2014

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Dec 12th, 2014
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Dec 12th, 2014
Dec 4th, 2016
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