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:

Re: Value of positive integer n [#permalink]
28 Feb 2011, 01:38

We are given that n is positive and n is integer.

From 1, n^4 < 25, so n can be 1 or n can be 2 as 1^4 =1 and 2^4 = 16 whereas 3^4 would be 81 and so on. We cant fix a value for n from this information, so clearly insufficient

From 2 , n^2 is not equal to n. Now for any positive integer n, n^2 will be equal to n only when n=1, so n can be any of 2,3,4 and so on.. clearly insufficient.

Combining 1 and 2 gives us that n can only be 2, so sufficient. Answer C

Re: Value of positive integer n [#permalink]
21 Jan 2013, 23:52

beyondgmatscore wrote:

We are given that n is positive and n is integer.

From 1, n^4 < 25, so n can be 1 or n can be 2 as 1^4 =1 and 2^4 = 16 whereas 3^4 would be 81 and so on. We cant fix a value for n from this information, so clearly insufficient

From 2 , n^2 is not equal to n. Now for any positive integer n, n^2 will be equal to n only when n=1, so n can be any of 2,3,4 and so on.. clearly insufficient.

Combining 1 and 2 gives us that n can only be 2, so sufficient. Answer C

For statement 1 the only possible values are 1 and 2, 3 isn't possible right?

How do you solve this question using examples? _________________

Re: Value of positive integer n [#permalink]
24 Jan 2013, 12:48

fozzzy wrote:

beyondgmatscore wrote:

We are given that n is positive and n is integer.

From 1, n^4 < 25, so n can be 1 or n can be 2 as 1^4 =1 and 2^4 = 16 whereas 3^4 would be 81 and so on. We cant fix a value for n from this information, so clearly insufficient

From 2 , n^2 is not equal to n. Now for any positive integer n, n^2 will be equal to n only when n=1, so n can be any of 2,3,4 and so on.. clearly insufficient.

Combining 1 and 2 gives us that n can only be 2, so sufficient. Answer C

For statement 1 the only possible values are 1 and 2, 3 isn't possible right?

How do you solve this question using examples?

Fozzzy, which example method you are referring to. If n^4<25, you can consider 1 & 2 as only positive numbers which satisfy the condition. _________________

Re: Value of positive integer n [#permalink]
25 Jan 2013, 21:09

PraPon wrote:

Fozzzy, which example method you are referring to. If n^4<25, you can consider 1 & 2 as only positive numbers which satisfy the condition.

The earlier explanation said 3^4 was satisfying the condition so that got me confused, Only 1 and 2 satisfy the equation. when we combine 1=1^2 so this case is ruled out leaving us with the only possible value as 2.

The fastest way to approach these questions is using examples, I was wondering if there is a graphic approach or any alternative solution in case the question is complex. _________________

It’s been a long time, since I posted. A busy schedule at office and the GMAT preparation, fully tied up with all my free hours. Anyways, now I’m back...

Ah yes. Funemployment. The time between when you quit your job and when you start your MBA. The promised land that many MBA applicants seek. The break that every...

It is that time of year again – time for Clear Admit’s annual Best of Blogging voting. Dating way back to the 2004-2005 application season, the Best of Blogging...