Homework Help

Three fair coins are tossed. What is the probability of no heads?

user profile pic

brandip18 | eNotes Newbie

Posted October 21, 2013 at 4:14 PM via web

dislike 0 like

Three fair coins are tossed. What is the probability of no heads?

Tagged with math, probilities

1 Answer | Add Yours

user profile pic

ishpiro | Teacher | (Level 1) Associate Educator

Posted October 21, 2013 at 4:19 PM (Answer #1)

dislike 0 like

Each time a fair coin is tossed, the probability of getting tails (not heads) is 1/2 = 0.5. When three coins are tossed, the probabilities of getting tails on each coin are multiplied. Thus, the probability of no heads is

`1/2 * 1/2 *1/2 = 1/8 = 0.125`

The probability is 1/8, 0.125, or 12.5%.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes