Is ((x-3)^2)^(1/2) = 3-x? (1) x≠3 (2) −x|x|>0 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 statement ALONE is sufficient. E. Statements (1)
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An integer n between 1 and 99, inclusive, is to be chosen at random. What is the probability that n(n+1) will be divisible by 3? (A) 1/9 (B) 1/3 (C) 1/2 (D) 2/3 (E) 5/6 Correct Answer: D You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on our GMAT
What is the greatest prime factor of 4^17 – 2^28? A. 2 B. 3 C. 5 D. 7 E. 11 Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on
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In the xy-plane, what is the y-intercept of line l? (1) The slope of line l is 3 times its y-intercept (2) The x-intercept of line l is -1/3 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.
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Each of the 25 balls in a certain box is either red, blue or white and has a number from 1 to 10 painted on it. If one ball is to be selected at random from the box, what is the probability that the ball selected will either be white or have an even number