a coin is tossed three times. what is the probability of getting three heads?
2007-05-28 21:55:58 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1/2*1/2*1/2
=1/8
2007-05-28 21:58:25 · answer #1 · answered by Mr.Karachi 5 · 0⤊ 0⤋
Each toss the probability of getting a head is 1/2, so
(1/2)*(1/2)*(1/2) = 1/8
About every 8 times of tossing a coin 3 times in a row, you should expect to get 3 heads.
Doug
2007-05-28 22:01:27 · answer #2 · answered by doug_donaghue 7 · 0⤊ 0⤋
Probability of getting head in a toss is = 1 / 2
For three independent tosses,
Total probability = (1 / 2) ^ 3 = 1 / 8
2007-05-28 22:02:18 · answer #3 · answered by Hell's Angel 3 · 0⤊ 0⤋
probability of getting head=1/2 (as you can only throw either heads or tails.. so you have a 50%chance of throwing a head if you tossed a coin once)
so
the probability of getting three heads= p(head) x p(head) x p(head)
=(1/2)(1/2)(1/2)
=1/8
2007-05-28 22:06:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Probability of getting head each time is 1/2.
Getting head 3 times = (1/2)*(1/2)*(1/2) = 1/8
2007-05-28 22:04:26 · answer #5 · answered by Jain 4 · 0⤊ 0⤋
probability of getting head=1/2
probability of getting three heads=p(head)*p(head)*p(head)
=(1/2)(1/2)(1/2)
=1/8
2007-05-28 22:01:25 · answer #6 · answered by jackleynpoll 3 · 0⤊ 0⤋