BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

GmatPrep - PS

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 144
Joined: Thu Apr 17, 2008 3:33 pm
Thanked: 8 times

Re: GmatPrep - PS

by Sunny22uk » Thu Aug 21, 2008 6:46 pm
varmaskarma wrote:I got a split between A and E which wont go away no matter how much i plugged in. Could someone please explain to me why the OA is E.
3x/2 is even if you substitute x=4
You cannot discover new oceans unless you have the courage to loose sight of the shore.
Top
Master | Next Rank: 500 Posts
Posts: 165
Joined: Wed May 28, 2008 11:25 pm
Thanked: 9 times
GMAT Score:730

by sumithshah » Thu Aug 21, 2008 8:23 pm
Heres a simpler way :

For E :

X is even - so X^2 is even and ((even)^2) / 2 is always even.
Now, 3*even = even and even + 1 is always odd

So no need to substitute.
Top
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Fri Nov 23, 2007 9:04 am
Thanked: 1 times

by varmaskarma » Thu Aug 21, 2008 8:42 pm
Thanks guys!
Top
Legendary Member
Posts: 574
Joined: Sun Jun 01, 2008 8:48 am
Location: Bangalore
Thanked: 28 times

by vishubn » Thu Aug 21, 2008 8:45 pm
It would be of great help if someone plugin or show how each option is elliminated before choosing E

thabks in advance

Vishu
Top
Post new topic Post Reply
• Page 1 of 1