My weaknesses were in probabilities and Venn Diagrams. So I took two days each to review them. I am good with integers, geometry and algebra, so I reviewed them by taking practice tests. As I said, I always had scores in quant above 47. Even in quant with my 47 score in the first test, I didn't even...

Is X negative? 1. x^3(1-x^2)<0 2. x^2-1<0 Please explain your answer.. Ron, how do I go about applying your strategy of picking numbers combining both statements to check for option C or E right in the begining? Am looking for a 2 min solution here. Look forward to your reply. C There are two parts...

How far is point P from point Q? (1) Chord PQ is same as radius and area of the circle it belongs to. (2) Major-arc PQ of the circle it belongs to is 5/3. Statement 1: if Area = radius = chord, it follows that A = r = Pi*r^2 => r=1/Pi so chord is 1/Pi No other circle fulfills the requirement that a...

In order for |N+5|=5 to be true N must either be 0 or -10 (1) N^2 not equal 0, tells you that N is not 0 (since 0^2 equals 0), therefore N must be -10 => sufficient (2) N^2 + 10N = 0 tells you that N can be either -10 or 0, which doesn't help you much in determining N, => insufficient so the answer ...

(1) maximum she could have walked is 12.8km, thus it took her certainly longer => sufficient

(2) in 2h=120min the furthest she could have walked is 120/9= 13.33km => sufficient

both statements allow to conlude that it took her longer than 2h to walk 16km

Answer: D

(1) obviously the statement basically states that k is an integer that is divisible by 3 (since 2k/3 is even) and that integer k cannot be smaller than 2, because if k=2, the statement wouldn't hold). 2*2/3 = not evenly divisible Thus, k itself must be a integer that is divisible by 3, but larger th...