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What is the smallest positive integer that is non-prime and not a fact

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Math Expert
Joined: 02 Sep 2009
Posts: 58453
What is the smallest positive integer that is non-prime and not a fact  [#permalink]

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18 Dec 2018, 00:23
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Difficulty:

25% (medium)

Question Stats:

71% (00:45) correct 29% (00:48) wrong based on 71 sessions

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What is the smallest positive integer that is non-prime and not a factor of 9! ?

A. 10
B. 11
C. 14
D. 20
E. 22

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Joined: 31 Oct 2013
Posts: 1464
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: What is the smallest positive integer that is non-prime and not a fact  [#permalink]

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18 Dec 2018, 04:21
Bunuel wrote:
What is the smallest positive integer that is non-prime and not a factor of 9! ?

A. 10
B. 11
C. 14
D. 20
E. 22

A) 10 = 5*2.
B)11.........Prime
C)14 =7*2
D)20 =5*4.
E)22 = 11*2. ...............22 can't be factor of 9!.

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Re: What is the smallest positive integer that is non-prime and not a fact  [#permalink]

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18 Dec 2018, 04:43
Bunuel wrote:
What is the smallest positive integer that is non-prime and not a factor of 9! ?

A. 10
B. 11
C. 14
D. 20
E. 22

from the given set only 22 is non prime and not a factor of 9!

IMO E 22.
Re: What is the smallest positive integer that is non-prime and not a fact   [#permalink] 18 Dec 2018, 04:43
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