Find all School-related info fast with the new School-Specific MBA Forum

It is currently 12 Jul 2014, 10:28

Close

GMAT Club Daily Prep

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is the product of j, k, l and m, or jklm, an odd number?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 25 Jun 2012
Posts: 65
Followers: 0

Kudos [?]: 5 [0], given: 21

Is the product of j, k, l and m, or jklm, an odd number? [#permalink] New post 10 Nov 2012, 03:54
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

49% (01:41) correct 49% (01:47) wrong based on 14 sessions
Is the product of j, k, l and m, or jklm, an odd number?

(1) j^4 + k^4 + l^2 + m^2 = 0

(2) -j = k = -l = m
[Reveal] Spoiler: OA

Last edited by Bunuel on 10 Nov 2012, 03:57, edited 1 time in total.
Edited the question.
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18507
Followers: 3192

Kudos [?]: 21330 [0], given: 2544

Re: Is the product of j, k, l and m, or jklm, an odd number? [#permalink] New post 10 Nov 2012, 04:01
Expert's post
Is the product of j, k, l and m, or jklm, an odd number?

(1) j^4 + k^4 + l^2 + m^2 = 0 --> j^4, k^4, l^2, and m^2 are all non-negative numbers. The sum of non-negative numbers is zero only when all of them equal to zero, thus j=k=l=m=0 --> jklm=0=even. Sufficient.

(2) -j = k = -l = m. If all variables equal to zero, then the answer is NO but if k=m=1 and j=l=-1, then the answer is YES. Not sufficient.

Answer: A.

Hope it's clear.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Re: Is the product of j, k, l and m, or jklm, an odd number?   [#permalink] 10 Nov 2012, 04:01
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic If j and k are positive integers and j + k is odd guerrero25 2 04 Feb 2014, 07:53
3 Experts publish their posts in the topic A certain expressway has Exits J, K, L, and M, in that order Bunuel 7 30 Jul 2012, 01:12
A certain expressway has exits J, K, L and M in that order a529612 4 30 Dec 2006, 23:42
Factorial of 8=(2^J)*(3^K)*(5^L)*(7^M). J+K+M+L= getzgetzu 1 05 May 2006, 21:45
i>j>k>l>m are numbers whose product is a praveen_rao7 12 02 Feb 2005, 07:19
Display posts from previous: Sort by

Is the product of j, k, l and m, or jklm, an odd number?

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.