GMAT OFFICIAL GUIDE PS Solution: This problem is testing our knowledge of the multiplication rules for positive and negative numbers. Remember that when we multiply an even number of …
GMAT OFFICIAL GUIDE PS Solution: Before jumping into this problem using the numbers provided, we must analyze what is really being tested here. We are really being asked, what …
GMAT OFFICIAL GUIDE PS Solution: We start by creating a variable for the total number of students in the math course. We can say: T = Total number of …
GMAT OFFICIAL GUIDE PS Solution: In this problem, there are only two events that could occur for the 3 coin flips. Either the coin will land on tails zero …
GMAT OFFICIAL GUIDE PS Solution: To solve, we first isolate the x^2 in the inequality 1 – x^2 ≥ 0. So we have: 1 ≥ x^2 Next, we take …
GMAT OFFICIAL GUIDE PS Solution: This is an interesting question because our initial instincts tell us to square x -1 by the FOIL method. However, an easier method is …
GMAT OFFICIAL GUIDE PS Solution: For the sixth term, we need to substitute 6 for n, and for the fifth term, we need to substitute 5 for n. Then …
GMAT OFFICIAL GUIDE PS Solution: We are given that 30 percent of the members of the have passed the lifesaving test. If we use variable T for the total …
