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Home > Self-Study Quizzes > Quiz GMAT Math practice - (5/36 questions - random) GMAT practice questions.  Once you complete the quiz you will see your score and explanation of the correct answer.  1.  For what range of values of 'x' will the inequality 15x - > 1? A) x > 0.4 B) x < 1/3 C) -1/3 < x < 0.4, x > 15/2 D) -1/3  < x < 0, x > 2/5 E) x < -1/3 and x > 2/5    2.  Data Sufficiency : Is y = 3? (1) (y - 3)(x - 4) = 0 (2) (x - 4) = 0 A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked. B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked. C) BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked. D) EACH statement ALONE is sufficient to answer the question asked. E) Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.    3.  If m, s are the average and standard deviation of integers a, b, c, and d, is s > 0? (1)    m > a (2)    a + b + c + d = 0 A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked. B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked. C) BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked. D) EACH statement ALONE is sufficient to answer the question asked. E) Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.    4.  The sum of the fourth and twelfth term of an arithmetic progression is 20. What is the sum of the first 15 terms of the arithmetic progression? A) 300 B) 120 C) 150 D) 170 E) 270    5.  Robin earns 30% more than Erica. Charles earns 60% more than Erica. How much % is the wages earned by Charles more than that earned by Robin? A) 23% B) 18.75% C) 30% D) 50% E) 100%

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