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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.  A cube of side 5cm is painted on all its side. If it is sliced into 1 cubic centimer cubes, how many 1 cubic centimeter cubes will have exactly one of their sides painted? A) 9 B) 61 C) 98 D) 54 E) 64    2.  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%    3.  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.    4.  The average weight of a group of 30 friends increases by 1 kg when the weight of their football coach was added. If average weight of the group after including the weight of the football coach is 31kgs, what is the weight of their football coach in kgs? A) 31 kg B) 61 kg C) 60 kg D) 62 kg E) 91 kg    5.  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.

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