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Factors!

Expert replies
Source: — Data Sufficiency |

Answer is D

by jeegarm » Mon Sep 22, 2008 5:17 pm
Answer is D !!
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by LifetimesofSC » Mon Sep 22, 2008 6:31 pm
I would say C. Any answer?

I wouldn't agree with D as factors are not the same as multiples. (crosses fingers)
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by stubbornp » Mon Sep 22, 2008 8:17 pm
imo E
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by Sachindh » Mon Sep 22, 2008 8:39 pm
I think answer should be 'a' :)
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by sumithshah » Mon Sep 22, 2008 10:19 pm
Answer is A

X is a Factor of Y is y/x = integer.

from a) we know, 24/(a*b) = integer , so 24/a = integer*b = integer.

Hence A is a factor of 24
Last edited by sumithshah on Tue Sep 23, 2008 3:37 am, edited 1 time in total.
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by Morgoth » Tue Sep 23, 2008 3:33 am
Answer is indeed A.

Here is how you can find the difference between factors and multiples
if there are 3 numbers x, y & z such that x*y = z
then x and y both are factors of z and z is a multiple of xy.
Factors are also known as Divisors.

Statement I
AB is the factor of 24, then A must be a factor of 24.
Sufficient.

Statement II
B=4
no idea about A.
Insufficient.

Hence A is the answer.

Thank you guys for you responses, Sumit's strategy also works well in this question, which infact is the same rule as above.
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by sumithshah » Tue Sep 23, 2008 3:38 am
Just curious - where is this question from?
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by Morgoth » Tue Sep 23, 2008 3:49 am
sumithshah wrote:Just curious - where is this question from?
This question is from one of the tests on LearnHUb.com Thought this question would be interesting to clear up on factors, multiples and divisors. I guess it did help lot of people considering the responses.
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by sumithshah » Tue Sep 23, 2008 3:50 am
Learn Hub stuff any good?

Also you've got your gmat tomorrow rt? good luck onit
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