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DS. PRIME NO.

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by [email protected] » Sat Sep 10, 2011 1:08 pm
Q: IS THE POSITIVE INTEGER X , A PRIME NUMBER ?

A: X AND THE SQUARE ROOT OF INTEGER W HAVE EQUAL NO. OF UNIQUE PRIME FACTORS.
B: X AND THE PERFECT SQUARE W, HAVE THE SAME NO. OF UNIQUE FACTORS
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Source: — Data Sufficiency |
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by cans » Sat Sep 10, 2011 7:58 pm
B) as W is a perfect square, it has atleast 3 factors: 1,W, root(w)
thus x also has atleast 3 factors and thus is not prime.
Sufficient...
A)if W = 16, X is not prime, if W=5, its prime. Insufficient
IMO B
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Cans!!
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by [email protected] » Sun Sep 11, 2011 12:02 am
cans wrote:B) as W is a perfect square, it has atleast 3 factors: 1,W, root(w)
thus x also has atleast 3 factors and thus is not prime.
Sufficient...
A)if W = 16, X is not prime, if W=5, its prime. Insufficient
IMO B
Ms.Cans, thanks for your reply.
PLEASE TELL WHAT BOOKS/MATERIAL YOU ARE STUDYING FOR VERBAL PRACTICE. I AM LACKING IN VERBAL AND WANT TO IMPROVE MY VERBAL SCORE. PLEASE HELP ME. WILL BE VERY THANKFUL TO YOU IF DO SO.
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by TwiceBitten » Sun Sep 11, 2011 3:11 am
I would also go with B.

Agree with Cans.
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