GMAT Videos

The function f is defined for each positive three-digit integer n by , where x, y and z are the hundreds, tens, and units digits of n, respectively. If m and v are three-digit positive integers such that then ? (A) 8(B) 9(C) 18(D) 20(E) 80 The real trick here is to think about f(m) … Read More

Look at what you’re trying to do: reduce the amount of ash by reducing the number of truckloads. Fewer truckloads does not necessarily mean less ash. If you were the corporate lawyer, your job would be to figure out how to reduce the number of truckloads while keeping the amount of ash exactly the same. … Read More

This is rated hard. Why? Mostly it’s picking what to do quickly. First eliminate the mixed numbers, then cancel the 15s in the bottom–don’t flip and multiply if possible. https://stan.store/yourgmatcoach FREE Factoring Magic Video Course: https://stan.store/yourgmatcoach/p/gmat-factoring-magic-8video-course- (2 3/5− 1 2/3)/(2/3 – 3/5) (A) 16(B) 14(C) 3(D) 1(E) -1

The question you want to ask yourself–no matter how weird it sounds on the surface–is this: does swimming cause asthma, or does asthma cause swimming. In this case, you’ll find out that quite possibly asthma causes swimming. Which of the following most logically completes the argument given? Asthma, a chronic breathing disorder, is significantly more … Read More