Math questions and topics from the Official Guide and Quantitative Review books. Please try to follow the posting pattern (e.g. OG - DS - #142) to allow for easier searches. Questions posted in the GMAT Math section regarding the OG have been moved here.
mrkamal
 
 

OG - DS - #25

by mrkamal Tue Jul 31, 2007 11:46 am

Hello,
The question states:
If i and j are integers, is i + j an even integer.
1) i<10
2) i=j
The answer given is B.

My question is what if both i and j equal 0? That could satisfy both statements and result in answer E, which is what I thought was the correct answer. From what I understand, 0 is an integer and not even. Please explain.

Thanks in advance.
-AK
amrinder
 
 

by amrinder Tue Jul 31, 2007 12:17 pm

Only 2 ways B is sufficient either e+e or o+o

Since i=j 2nd stmt is sufficient Ans is B

Also

0 is an even number

So e+e=e
givemeanid
 
 

by givemeanid Tue Jul 31, 2007 2:07 pm

0 is an even number


Just to nitpick, 0 is an even INTEGER.
Guest
 
 

by Guest Tue Jul 31, 2007 10:57 pm

Okay thanks, I didn't realize 0 was considered an even #.
I get it now.
Best,
AK
dbernst
ManhattanGMAT Staff
 
Posts: 300
Joined: Mon May 09, 2005 9:03 am
 

by dbernst Thu Aug 02, 2007 11:33 am

That is correct. Zero is even, though it is neither positive nor negative. Good job everybody!