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

Redeem

PS-1

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 129
Joined: Tue Jul 22, 2008 3:53 am
Thanked: 2 times

PS-1

by sparsh.21 » Wed Jan 14, 2009 9:20 am
150, 200, 250, n

Which of the following could be the median of the 4 integers listed above?

I. 175
II. 215
III. 235


A. I only
B. II only
C. I and II only
D. II and III only
E. I, II, and III



OA is C

Please explain the answer
Top
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pm
Thanked: 237 times
Followed by:25 members
GMAT Score:730

Re: PS-1

by logitech » Wed Jan 14, 2009 10:22 am
If N < 150

N, 150, 200, 250 = median will be 175

For 215 and 235 since they are between 200 and 250

Let's multiply them by 2 and see where they sit respect to 200

215x2 = 430 - 200 = 230

150, 200, 230, 250 - OK

235 x2 = 470 - 200 = 270

150, 200, 250, 270 now since it is bigger than 250, the mean will be 225 for any number that is > 250 so NOT OK!

(C)

Drill Baby Drill
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Master | Next Rank: 500 Posts
Posts: 129
Joined: Tue Jul 22, 2008 3:53 am
Thanked: 2 times

by sparsh.21 » Wed Jan 14, 2009 6:54 pm
Nice Explanation.... Thanks
Top
Post new topic Post Reply
• Page 1 of 1