It's hard to predict the out come of divisibility, because the outcome can be a fraction regardless the even or odd rules. Q: set x has n number of int. is mean even? Statement 1: n is even mean can be fraction, odd or even insufficient Statement 2: all int. in x are even mean can be fraction or eve...

2. Rain,Rain,Rain, N.Rain,N.Rain

probability of exactly 3 days of rain= (# of ways with 3 days of rain)/(total number of possibility of a raining day in 5 days)

(5!)/(2!3!)/(5!)=1/(2*2*3)=1/12

I think this is the right answer, please correct me if i made a mistake.

In must be true questions, try to disprove the answer choice. A. x>2, if x=-1, then x is not greater than 2. B. x>-7, smallest x=-1.999 or largest x=6.9999, which both are greater than -7. C. x<2, if x=6, then x is not less than 2. D.-7<x<2, if x=5, then x is not in that range. I hope this help, ple...

just curious, what's the source of this question? I always thought the actual GMAT would have easier number for weighted average calculation.

This is an experiment type question. The experiment usually assume their "data" or result is representative. The conclusion: A with classic: cried less, fewer ailments, and more weights than B with rock music. In answer E, does it matter if music were play at different time? The experiment...

In my opinion, the answer is D.

I will go in to details if my answer is correct.

Hey Ron, thanks for the amazing explanation, but I am still not sure if C is sufficient, because the neither statement stated that the "middle" number is equal to 1000. So...we can have -20,-10, 9999, 10000, 10001 median=9999 we also can have... -20,-10,1000,1001,1002 median=1000 Since we ...