If n is a positive integer and n^2 is divisible by 72, then the largest positive integer that must divide n is A. 6 B. 12 C. 24 D. 36 E. 48 We get this one a lot in GMAT tutoring sessions. Most people fail to understand what the questions is asking and then just […]
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The probability that event M will not occur is 0.8 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur? (A) 1/5 (B) 2/5 (C) 3/5 (D) 4/5 (E) 12/25
Of the three-digit integers greater than 700, how many have two digits that are equal to each other and the remaining digit different from the other two? (A) 90 (B) 82 (C) 80 (D) 45 (E) 36 Correct Answer: C Full explanation coming soon. Send us a note if you’d like this added to the
If a, b, c, and d, are positive numbers, is (a/b)<(c/d)? (1) 0<(c-a)/(d-b) (2) (ad/bc)2<(ad)/(bc) A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH
If a, b, c, and d, are positive numbers, is (a/b)<(c/d)? Read the Full Article »
For any integers x and y, min(x, y) and max(x, y) denote the minimum and the maximum of x and y, respectively. For example, min (5, 2) = 2 and max(5, 2) = 5. For the integer w, what is the value of min(10, w)? (1) w = max(20, z) for some integer z. (2)
