SOLUTION: Three unbiased coins are tossed a) draw a diagram showing all possibilities b) find the probability of obtaining at least one tail

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Question 1119228: Three unbiased coins are tossed
a) draw a diagram showing all possibilities
b) find the probability of obtaining at least one tail
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Three unbiased coins are tossed
a) draw a diagram showing all possibilities
2 possibilities for each coin. 3 coins --> 2^3 = 8 possibilities
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H H H
H H T
H T H
H T T
T H H
T H T
T T H
T T T

b) find the probability of obtaining at least one tail
At least 1 tail is all 8 except for H H H --> 7/8
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