Kronos

I assume that's what the GRE people would expect you to do. :)

Very odd question, not sure it can be solved.

I thought sin con tan are not supposed to be on the GRE, right? So there should be a conventional solution.

Thank you. :)

7 Let's assume the first day of the month is a Tuesday. Then the fourth Tuesday would be the 22. If Tuesday was the second day of the month it would be the 23 and so on until we have the case of Tuesday being the 7th day of the month and the fourth Tuesday being the 28th. Because there are only 7 days in the week the day can't move any further because the next possible first day of the month is a tuesday again.

It seems to be a lot like the Monty Hall paradox. Not sure it would show up one the GRE. Interesting one though. Monty Hall problem - Wikipedia, the free encyclopedia

Why can they not be along the same way? It doesn't state that anywhere in questions. I agree with sweetu.

This question cries for a simple "plug it in" solution. All the algebra costs far too much time.

You dont even need a formula for that. Just group them in your head like this: There are 90 numbers between 11 and 100. Half of them are odd. You can group each odd number with a positive number that is one higher in absolute value -11/12 -13/14 etc. There are 90/2 = 45 of such pairs and each of these pairs adds +1. So that equals 45. And there is the additional pair -9/10 so the answer is 46. Edit: Overlooked Minuddin's answer. Never mind. ;)

@quantmaster The answer for the original powerprep question is C. Try to distribute 7 notes to three people WITHOUT giving one of them 3 and you will see why. It is impossible, hence both colums are equal. Doesn't require aany advanced math.

You assume that the numbers are evenly distributed but we simply don't know that. You make unwarranted assumptions.

How did you come up with 3/11? Show us your calculation, there must be a mistake in it somewhere.

I own the 2009 Kaplan GRE Guide and today did the first of the quantitative practice sessions on the CD accompanying the book. I got all 30 of them right and am now wondering whether they are just really easy? Anybody's got any insights?

sweetu, it should be Y=3R. So all in all the number of blocks is 6R. As the number of blue blocks is 2R the answer is 1/3.

It works for 44. Hence, the least possible value of x is 44 and the answer is A because 44 is bigger than 40.