Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

1)If each of the +ve integers a,b and c are prime numbers [#permalink]
02 May 2006, 08:37

(1)If each of the +ve integers a,b and c are prime
numbers with abc=30,then c=?
(1)a<b<c
(2)a-b=c
>
I chose A as my solution is 2*3*5 = 30 where a=2,b=3
and c=5 and thus a<b<c
I rejected the 2nd statement because when a=5,b=2 then
c=5-2=3 and when a=5,b=3 then c=5-3=2

Thus we get 2 diff values of 'c' viz 2 and 3 when we consider the second statement,but the official answer gives 'D' as the correct answer.Can you tell me how the second statement gives the exact value of 'c'

Re: a,b,c integer question [#permalink]
02 May 2006, 08:52

fewjun wrote:

(1)If each of the +ve integers a,b and c are prime numbers with abc=30,then c=? (1)a<b<c (2)a-b=c > I chose A as my solution is 2*3*5 = 30 where a=2,b=3 and c=5 and thus a<b<c I rejected the 2nd statement because when a=5,b=2 then c=5-2=3 and when a=5,b=3 then c=5-3=2

Thus we get 2 diff values of 'c' viz 2 and 3 when we consider the second statement,but the official answer gives 'D' as the correct answer.Can you tell me how the second statement gives the exact value of 'c'

I tend to agree with you, (2) does give two values for C, unless I am missing something really important.

Re: a,b,c integer question [#permalink]
02 May 2006, 17:07

fewjun wrote:

(1)If each of the +ve integers a,b and c are prime numbers with abc=30,then c=?

(1)a<b<c (2)a-b=c

I chose A as my solution is 2*3*5 = 30 where a=2, b=3 and c=5 and thus a<b<c. I rejected the 2nd statement because when a=5,b=2 then c=5-2=3 and when a=5,b=3 then c=5-3=2

Thus we get 2 diff values of 'c' viz 2 and 3 when we consider the second statement,but the official answer gives 'D' as the correct answer.Can you tell me how the second statement gives the exact value of 'c'

we can easily disput with the OA given if OE given is not justifiable.
make sure you posted the question correctly.