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Is positive integer x prime?

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Joined: 02 Sep 2009
Posts: 41891

Kudos [?]: 129061 [0], given: 12190

Is positive integer x prime? [#permalink]

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New post 14 Aug 2017, 02:17
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

86% (00:28) correct 14% (00:32) wrong based on 29 sessions

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Kudos [?]: 129061 [0], given: 12190

Intern
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Joined: 05 Jun 2017
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Kudos [?]: 0 [0], given: 0

Re: Is positive integer x prime? [#permalink]

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New post 14 Aug 2017, 02:20
D?

using A, it can not be a prime number as it is a product of two numbers.
using b, there is no prime number among 14,15 and 16

combining two --> no solution

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Kudos [?]: [0], given: 15

Location: India
GMAT 1: 540 Q42 V22
Re: Is positive integer x prime? [#permalink]

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New post 14 Aug 2017, 02:44
D
1. Prime numbers have factors only 1 & number itself. If it can be expressed as product of two numbers which are greater than 1 then its not prime number. Sufficient

2. 13< 14,15,16< 17 answer is No. Sufficient

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Kudos [?]: [0], given: 15

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Joined: 13 Jul 2015
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Kudos [?]: 1 [0], given: 1

Re: Is positive integer x prime? [#permalink]

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New post 14 Aug 2017, 03:42
Ans : D (Each statement alone is sufficient)

a. Sufficient - The no is not a prime as it can be expressed as product of two numbers greater than 1
b. Sufficient - There is no prime no between 13 and 17 .

Kudos [?]: 1 [0], given: 1

Re: Is positive integer x prime?   [#permalink] 14 Aug 2017, 03:42
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Is positive integer x prime?

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