If k is an integer and (0.0025)(0.025)(0.00025) × 10^k is an integer
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given the expression: 0.0025 x 0.025 x 0.00025 x 10^k = integer To determine the least possible value of k, we want …
Tag: Official Guide for GMAT Review 2016
If x/y = c/d and d/c = b/a…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given two equations: 1) x/y = c/d 2) d/c = b/a Let’s now test the expressions in the Roman numerals to determine …
If x^2 − 2 < 0, which of the following specifies all the possible
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We must determine all of the values of x based on the inequality x^2 – 2 < 0. To determine all the possible values …
The function f is defined by f(x) =…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are given the function defined by f(x) = √x – 10, and we also see that f(t) = u. First, let’s determine what …
In the x-y coordinate plane, which of the following points…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: To solve we first want to isolate y in the equation kx + 3y = 6. 3y = -kx + 6 y = -kx/3 …
Pumping alone at their respective constant rates, one inlet pipe fills…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: To solve, we want to use the combined worker formula: work of pump 1 + work of pump 2 = total work completed Let’s …
Which of the following expressions can be written as an integer
May 9, 2016
GMAT Official Guide Solution: Let’s simplify the expressions in each Roman numeral to see which of them must be an integer. I. (√82 + √82)^2 (2√82)^2 4 x 82 …
At the start of an experiment, a certain population consisted of 3 animals…
May 9, 2016
GMAT OFFICIAL GUIDE PS Solution: We are starting with 3 animals, and at the end of each month that number of animals doubles in size. Thus, we can say: …