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What is the value of the positive integer N?

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Manager
Joined: 25 Dec 2018
Posts: 84
Location: India
GMAT 1: 490 Q47 V13
GPA: 2.86
What is the value of the positive integer N?  [#permalink]

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06 Jan 2019, 08:34
1
00:00

Difficulty:

35% (medium)

Question Stats:

65% (00:44) correct 35% (00:59) wrong based on 54 sessions

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What is the value of the positive integer N?

(1) N^2 has 3 positive factors

(2) N is a multiple of 3
Manager
Joined: 11 Feb 2018
Posts: 201
GMAT 1: 690 Q47 V37
GMAT 2: 710 Q50 V36
GMAT 3: 750 Q50 V42
Re: What is the value of the positive integer N?  [#permalink]

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06 Jan 2019, 08:53
2
1)N2 has 3 factors
N = 2,3,5,7,11,13..... N is prime

N=more than 1 value = Not sufficient.

2) N is a multiple of 3

N = 3,6,9....

N=more than 1 value = Not sufficient.

3)Both combined

Only value possible from the above 2 sets combined = 3

N = 3.

Hence C)
Manager
Joined: 09 Mar 2018
Posts: 169
Location: India
Re: What is the value of the positive integer N?  [#permalink]

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08 Jan 2019, 11:26
akurathi12 wrote:
What is the value of the positive integer N?

(1) N^2 has 3 positive factors

(2) N is a multiple of 3

Statement 1
$$N^2$$ has 3 positive factors

Here $$N^2$$ can be 4, 9 , 25
which will give 2 values for N=> 2 or 3
Insufficient

Statement 2
N is a multiple of 3
N = 3,6,9

Combining will give common value as 3, because 6 will have 4 factors

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Re: What is the value of the positive integer N? &nbs [#permalink] 08 Jan 2019, 11:26
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