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On average, a sharpshooter hits the target once every 3 shot
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14 May 2019, 00:24
14 May 2019, 00:24
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Question Stats:
48% (01:48) correct
51% (01:07) wrong based on 33 sessions
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On average, a sharpshooter hits the target once every 3 shots. What is the probability that he will hit the target in 4 shots?
(A) \(1\)
(B) \(\frac{1}{81}\)
(C) \(\frac{1}{3}\)
(D) \(\frac{65}{81}\)
(E) \(\frac{71}{81}\)
(A) \(1\)
(B) \(\frac{1}{81}\)
(C) \(\frac{1}{3}\)
(D) \(\frac{65}{81}\)
(E) \(\frac{71}{81}\)
Re: On average, a sharpshooter hits the target once every 3 shot
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22 Aug 2019, 19:30
22 Aug 2019, 19:30
Carcass wrote:
On average, a sharpshooter hits the target once every 3 shots. What is the probability that he will hit the target in 4 shots?
(A) \(1\)
(B) \(\frac{1}{81}\)
(C) \(\frac{1}{3}\)
(D) \(\frac{65}{81}\)
(E) \(\frac{71}{81}\)
(A) \(1\)
(B) \(\frac{1}{81}\)
(C) \(\frac{1}{3}\)
(D) \(\frac{65}{81}\)
(E) \(\frac{71}{81}\)
Calculate the probability he will miss all 4 shots!
(2/3)^4 = 16/81 is the chance of missing all the shots.
So 1 - 16/81 is the change that hits it at least once.
Evaluates to 65/81
Answer is D.
gmatclubot
Re: On average, a sharpshooter hits the target once every 3 shot [#permalink]
22 Aug 2019, 19:30
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