Rowan

(n+1)^3 – ((n^3)+1) GMAT cubic binomial expansion

If n is a positive integer, which of the following could be equal to ((n+1)^3)−((n^3)+1)? A. 7^3(6^3−1) B. 7^3(6^3+1) C.…

1 week ago

If 3x – 2y = 32 and sqrt (3x) – sqrt (2y) = 4 GMAT

This looks like something where we ought to be able to square the second equation as it stands--but that will…

1 week ago

Units question: Solomon’s truck gets 24 mpg GMAT

Solomon's truck gets 24 mpg GMAT In this case, you need to look at the units as mpg/lbs or mpg/mph,…

1 week ago

Last year Comfort Airlines had twice as many delayed flights GMAT

Last year Comfort Airlines had twice as many delayed flights GMAT In an explain the apparent contradiction question, you need…

1 week ago

To reduce waste of raw materials, the government of Sperland GMAT

Weaken questions almost always get broken by asking "how is it possible that the Conclusion is false while the facts…

2 weeks ago