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excellent, thank you!

If the sum of two positive integers is 43 and the difference in their squares is 43, then the smaller integer is: A:17 B:19 C:20 D:21 E:22 What's the trick to get this quickly? I looked at it and I couldn't figure out the fastest approach without working all the numbers out

Ok I was doing it backwards... I was using d as the larger number and n as the smaller. I still have not mastered visualization of a problem when I read math language. Thank you so much! I finally get it. Now how did you figure to use n/d? and how did you decide to pick n=15 and d=5??

Sorry for bombing the board with questions... just really need to figure these things out before my test Comparison: Column A: √(79)(80)(81)(82) Column B: 6,400 I couldn't figure out the "trick" to get the answer without doing the tedious calculations... whats the shortcut? Nevermind... found it here: http://www.www.urch.com/forums/gmat-problem-solving/5722-tricky-square-root-one.html

yes N = n (sorry) Care to explain?

Have the GRE in 1 week and I'm not feeling 100% confident in my math. Here is another question I've had problems with: If n and d are positive integers such that N is a multiple of d, how many positive multiples of d are less than or equal to n? A: n/d B: dn C: d/n D: d(n+1) E: d/n + 1 Also, did anyone figure out problem #1?

initially thats how I tried figuring it out in my head... but I kept getting confused with the wording.... I wasn't sure what percentage T was of WHAT.. the straight forward method will make me less likely to mess up again....

Thank you so much! Yes that was a huge help. I was getting so frustrated because I couldn't figure them out. In the 1st problem the mistake I was making was forgetting to change the second √5/2 to positive....I forgot the parenthesis makes you change both signs..... silly mistakes like that cost lots of points :doh: Thanks again for being a huge help :grad: Oh and btw, I correctly copied the problem. it's definitely 1/√5 on the outside of the parenthesis.... which means it comes out to 1/√5 (2√5)....

so its a quantitative comparison question Column A: 1/√5 [(1+√5/2)-(1-√5/2)] Column B: 1 Awnser: So I start working within parenthesis and I get that they cancel each other out equalling to 0. But I'm wrong.....why? Here is another one. Its driving me up a wall. I figured this one out once before but can't seem to wrap my brain around it again. Its got tricky wording. The price of product R is 20% higher than the price of product S, which is in turn 30% higher than the price of product T. The price of product R is what percent higher than the price of product T? a) 60% b) 56% c) 50% d) 44% e) 25% Answer:

hey guys! I'm taking it in July 20th... I'm scoring mostly in high 600's for both verbal and quantitative in powerprep.... I'm trying to tie up the loose ends to hopefully score 1450 or so. GL to you all

Great post!!! Got my GRE test in 2 weeks and this post is making me feel a little more confident... I got 10 out of 16.... which is really good considering they're the most difficult and lately I usually get 18-19 out of 20 when I get a new set of words.... been scoring 680-730 on the Powerprep verbal.... Keep up these great posts! [clap]

awesome link! Thanks! Although I knew the Pride:Lion thing too.... I did get tricked on a similar analogy of Actors:Troupe (had no idea what a troupe was)