Questions about the world of GRE Math from other sources and general math related questions.
piccolino
Course Students
 
Posts: 1
Joined: Fri Jun 10, 2011 6:29 am
 

Minor error on explanation Challenge 10/24/11 Answer B?

by piccolino Mon Nov 28, 2011 6:56 pm

Hi guys, it looks likely that Challenge pb of 10/24/11 has a bit of an erroneous explanation for B, though it does not change the correct answer (ie the numbers 17, 19 and 21 put x in the 3rd quartile).
tdearr
Manhattan Prep Staff
 
Posts: 50
Joined: Sun Mar 27, 2011 9:37 am
 

Re: Minor error on explanation Challenge 10/24/11 Answer B?

by tdearr Wed Nov 30, 2011 6:16 pm

Hi Piccolino,

Thanks for pointing that out! This was indeed an error. We have fixed the typo to note that answer choice B has a 60% probability. As you pointed out, this does not change the outcome of the problem. Thanks again. Contact me by email at tdearr@manhattangre.com and we'd be happy to give you a free MGRE eBook as a reward for your eagle eye.

Best Regards,
Taylor