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One integer will be randomly selected from the integers 11
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09 May 2015, 10:23
09 May 2015, 10:23
1
Expert Reply
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Question Stats:
75% (01:10) correct
25% (02:41) wrong based on 40 sessions
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One integer will be randomly selected from the integers 11 to 60, inclusive. What is the probability that the selected integer will be a perfect square or a perfect cube?
(A) 0.1
(B) 0.125
(C) 0.16
(D) 0.5
(E) 0.9
Kudos for the right answer and explanation
(A) 0.1
(B) 0.125
(C) 0.16
(D) 0.5
(E) 0.9
Kudos for the right answer and explanation
Re: GRE Math Challenge #81-One integer will be randomly selected
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14 Dec 2017, 06:46
14 Dec 2017, 06:46
2
sandy wrote:
One integer will be randomly selected from the integers 11 to 60, inclusive. What is the probability that the selected integer will be a perfect square or a perfect cube?
(A) 0.1
(B) 0.125
(C) 0.16
(D) 0.5
(E) 0.9
(A) 0.1
(B) 0.125
(C) 0.16
(D) 0.5
(E) 0.9
Here
Total number of integers from 11 to 60 = 50
perfect squares from 11 to 60 are = 16 , 25, 36 and 49
perfect cube = 27
Hence there are 5 integers that can be either a perfect square or a perfect cube
Therefore probability = \(\frac{5}{50}\)= 0.1
Re: One integer will be randomly selected from the integers 11
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11 Dec 2019, 15:25
11 Dec 2019, 15:25
Expert Reply
Bump for further discussion
