SOLUTION: What is the probability of obtaining at least one head in 3 flips of a coin?

Algebra ->  Probability-and-statistics -> SOLUTION: What is the probability of obtaining at least one head in 3 flips of a coin?       Log On


   

Question 604753: What is the probability of obtaining at least one head in 3 flips of a coin?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the probability of NO heads (3 tails) is (1/2)^3 or 1/8

so the probability of at least one head is 1-(1/8) or 7/8