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What is the probability of flipping a fair coin three times and the co

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Math Expert
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What is the probability of flipping a fair coin three times and the co  [#permalink]

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New post 13 Dec 2016, 06:20
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

65% (00:56) correct 35% (01:01) wrong based on 110 sessions

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Re: What is the probability of flipping a fair coin three times and the co  [#permalink]

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New post 13 Dec 2016, 07:58
H T T = P(H)*P(T)*P(T)*# of arrangements = \(\frac{1}{2}*\frac{1}{2}*\frac{1}{2} * \frac{3!}{1!*2!} = \frac{3}{8}\)

Answer C.
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Re: What is the probability of flipping a fair coin three times and the co  [#permalink]

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New post 06 Apr 2018, 01:41
Bunuel wrote:
What is the probability of flipping a fair coin three times and the coin landing on heads on exactly one flip?

A. 1/8
B. 1/4
C. 3/8
D. 1/2
E. 3/4


No. of possible outcome of flipping of Coin = 2*2*2 = 8 (Each flip can be either H or T)
No. of events in which there will be H in exactly one flip = HTT, THT, TTH = 3

So, probability = 3/8

Answer C
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Re: What is the probability of flipping a fair coin three times and the co &nbs [#permalink] 06 Apr 2018, 01:41
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