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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Number N is randomly selected from a set of consecutive integers betwe
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02 Aug 2021, 01:33
02 Aug 2021, 01:33
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Question Stats:
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Number N is randomly selected from a set of consecutive integers between 50 and 69, inclusive. What is the probability that N will have the same number of factors as 89?
a) 1/2
b) 1/5
c) 0
d) 1/3
e) 1/4
a) 1/2
b) 1/5
c) 0
d) 1/3
e) 1/4
Retired Moderator
Joined: 19 Nov 2020
Posts: 326
Given Kudos: 64
GRE 1: Q160 V152
Number N is randomly selected from a set of consecutive integers betwe
[#permalink]
02 Aug 2021, 17:52
02 Aug 2021, 17:52
89 is prime
primes between 50 and 69 inclusive (69-50+1=20 integers) include 53, 59, 61, 67 (4 integers)
P(prime)=4/20=1/5. Answer is b
primes between 50 and 69 inclusive (69-50+1=20 integers) include 53, 59, 61, 67 (4 integers)
P(prime)=4/20=1/5. Answer is b
GeminiHeat wrote:
Number N is randomly selected from a set of consecutive integers between 50 and 69, inclusive. What is the probability that N will have the same number of factors as 89?
a) 1/2
b) 1/5
c) 0
d) 1/3
e) 1/4
a) 1/2
b) 1/5
c) 0
d) 1/3
e) 1/4
gmatclubot
Number N is randomly selected from a set of consecutive integers betwe [#permalink]
02 Aug 2021, 17:52
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