SOLUTION: A coin is tossed 3 times. What is the probability of obtaining at least 1 head?
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Question 453929: A coin is tossed 3 times. What is the probability of obtaining at least 1 head?
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
A coin is tossed 3 times. What is the probability of obtaining at least 1 head?
The probability of obtaining no heads, i.e. all tails is:
1/2*1/2*1/2 = 1/8
Therefore, the probability of obtaining at least one head is:
1 - 1/8 = 7/8
You can also see this by writing down all the possible outcomes. 7 of the 8 combinations will have at least one head.
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