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PS - divisor>1 Q

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PS - divisor>1 Q

by ccassel » Mon Apr 18, 2011 12:00 pm
How would you solve this question?

Which of the following integers does NOT have a divisor greater than 1 that is the square of an integer?

A. 75
B. 42
C. 32
D. 25
E. 12

Answer B
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by force5 » Mon Apr 18, 2011 2:37 pm
75 has 25 which is a square greater than 1
42 - doesnt have any
32 - has 4
25 - has 25
12 - has 4

hence B

bro you could find that out by factorizing each choice. and if you find any pair then that would not be an answer.

let me know if you need any further clarification.
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by Stuart@KaplanGMAT » Mon Apr 18, 2011 9:08 pm
ccassel wrote:How would you solve this question?

Which of the following integers does NOT have a divisor greater than 1 that is the square of an integer?

A. 75
B. 42
C. 32
D. 25
E. 12

Answer B
Hi!

I'd write out all of the perfect squares less than 75 (since that's the biggest answer):

4, 9, 16, 25, 36, 49, 64

and then simply look for the choice for which none of those are a factor.
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