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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

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:

26 Does the decimal equivalent of P/Q, where P and Q are [#permalink]

Show Tags

22 May 2008, 19:39

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

26 Does the decimal equivalent of P/Q, where P and Q are positive integers, contain only a finite number of nonzero digits? (1) P>Q

(2) Q=8

A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient C BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D EACH statement ALONE is sufficient E Statements (1) and (2) TOGETHER are NOT sufficient

I think the answer should be E. The two statements together are not sufficient.

I agree its E - S1 is insufficient, eliminates A and D, S2 is insufficient, eliminates B - even with both together, we cant determine - eliminates D. So the answer is E

Statement 2: P/8 noe P= 2n or 2n+1 (either even or odd)

= n/4 or n/4 + 1/8 hence need to see if n/4 is fixed or repeating since 1/8 is fixed

again n is either of the form 2m or 2m+1 hence again check 2m/4 or (2m+1)/4 which leads to to check if m/2 is fixed or not..follwoing the same logic we see tht it has to be always fixed in length.

confused by the statement2. any number divided by 8 has a finite number of decimal? If p=8,16,24..., and Q=8, then P/Q=1,2,3..., it's an integer, no decimal number. I think S2 not sufficient alone.

confused by the statement2. any number divided by 8 has a finite number of decimal? If p=8,16,24..., and Q=8, then P/Q=1,2,3..., it's an integer, no decimal number. I think S2 not sufficient alone.

So I chose E.

You miss the point. The question is whether there will be a finite(0 or 1 or 2 .. countable) number of decimal digits or simply an inifinite chain like ( 0.33333..._ or 0.124145254785....(non recurring)_ ).

Since 1/8 = 0.125 (finite 3 digits), when it is multiplied with any integer, the no. of digits will be finite. Thus B.

confused by the statement2. any number divided by 8 has a finite number of decimal? If p=8,16,24..., and Q=8, then P/Q=1,2,3..., it's an integer, no decimal number. I think S2 not sufficient alone.

So I chose E.

You miss the point. The question is whether there will be a finite(0 or 1 or 2 .. countable) number of decimal digits or simply an inifinite chain like ( 0.33333..._ or 0.124145254785....(non recurring)_ ).

Since 1/8 = 0.125 (finite 3 digits), when it is multiplied with any integer, the no. of digits will be finite. Thus B.

Does the decimal equivalent of P/Q, where P and Q are positive integers, contain only a finite number of nonzero digits? Quest ion says it decimal contains finite number of non zero digits.

in the above case 16/8 (p/Q)= 2.000 that means decimal has zero digits right?

So I will chose E
_________________

Your attitude determines your altitude Smiling wins more friends than frowning

gmatclubot

Re: a math question
[#permalink]
23 May 2008, 09:54