So I studied hard yesterday and did my second practice test today, I got 49,47 for a 770 which I am ecstatic about. I tried really slowing myself down and ended up only having 20 seconds left for the final question of quant. Generally found this exam more difficult. I got 9 quant wrong and 2 verbal wrong. Not sure what exactly I will do to improve for the next 8 days before my exam. I am definitely feeling confident although I haven't looked at the AWA part at all yet.
noboru wrote:
I would say that it is Medium Difficult Question (650 level or something like that). I mean, there are much more challenging questions than this one
Here were the two hardest questions from todays exam. I actually am still not sure how to solve one of them.
1. If x and y are positive integers such that x = 8y + 12, what is the greatest common divisor of x and y.
(1) x = 12u, where u is an integer
(2) y = 12z, where z is an integer
2. A manufacturer produced x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If the manufacturer produced 1000 video cameras in 1993 how many did the manufactuer produce in 1995?
(1) xy = 20
(2) x + y + xy/100 = 9.2
What level do you think they are? Number 2 I still am not sure about.
Mackieman wrote:
Impressive Quantscore you got with 20 min left
I would do like this...
(3^(4n+2))+m = (3^4n * 3^2) + m => (81^n * 9 )+ m, 81^n will always have 1 as unit digit for any value of n and 1 * 9 will always result in 9 so the product will always be xxxx9 + m for all values of n.
Thanks
although apparently using all my time did not help.
And yeah fair enough. Getting more familiar with units digits as a concept actually makes that question quite simple.