800score.com
http://www.800score.com/forum/

GMAT Coordinate Geometry
http://www.800score.com/forum/viewtopic.php?f=3&t=30
Page 2 of 2

Author:  questioner [ Mon Jun 18, 2012 3:55 pm ]
Post subject:  Re: math (test 1, question 26): probability, x,y-plane

Does this question account for areas where X is positive and Y is negative? For example, in the fourth quadrant, aren't all X values greater than Y values? Wouldn't the same apply for half of the third quadrant as well?

Author:  Gennadiy [ Mon Jun 18, 2012 4:03 pm ]
Post subject:  Re: math (test 1, question 26): probability, x,y-plane

Quote:
Does this question account for areas where X is positive and Y is negative?
No, the question statement implies Quadrant 1 only.
Quote:
... , what is the probability that x > y > 0?



If we didn't have that "> 0", then your reasoning would be true, we would need to look into all quadrants.

Sometimes a little part of the information in a question statement slips the mind and it can affect the whole reasoning and lead to a wrong answer choice. Reading every word and symbol in a question statement is very important. Do not hurry, when reading the question statement.

Page 2 of 2 All times are UTC - 5 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/