On three consecutive flips of a coin, what is the probability that all three produce the same result?
(A) 1/16
(B) 1/8
(C) 1/4
(D) 3/8
(E) 1/2
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(A) 1/16
(B) 1/8
(C) 1/4
(D) 3/8
(E) 1/2
[Reveal] Spoiler:
I came up with (1/2)*(1/2)*(1/2) =1/8
However, the explanation states that the answer is 1/4.
On the Total GMAT book, I had the following question: If a fair coin is flipped three times, what is the probability that it will be heads all three times?
There the answer given is 1/8, which is what I came up with.
Am I missing something? I do not see any distinction between these two questions.
However, the explanation states that the answer is 1/4.
On the Total GMAT book, I had the following question: If a fair coin is flipped three times, what is the probability that it will be heads all three times?
There the answer given is 1/8, which is what I came up with.
Am I missing something? I do not see any distinction between these two questions.