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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.  The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers? A) 4 B) 5 C) 3 D) 3.5 E) 0.5    2.  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    3.  If the mean of numbers 28, x, 42, 78 and 104 is 62, then what is the mean of 128, 255, 511, 1023 and x? A) 395 B) 275 C) 355 D) 415 E) 365    4.  In the first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7, and a remainder 9 when divided by 11? A) 11 B) 14 C) 12 D) 13 E) 10    5.  If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have? A) 10 sides B) 8 sides C) 12 sides D) 9 sides E) None of these

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