Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.)
all possible outcomes on 3 coins are: 3 heads: HHH --> 1 outcome2 heads: HHT or HTH or THH --> 3 outcomes1 head: HTT or THT or TTH --> 3 outcomes0 heads: TTT --> 1 outcome
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?