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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.  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    2.  If 10, 12 and 'x' are sides of an acute angled triangle, how many integer values of 'x' are possible? 7 12 9 13 11    3.  The length of a rope, to which a cow is tied, is increased from 19m to 30m. How much additional ground will it be able to graze? Assume that the cow is able to move on all sides with equal ease. A) 1696 sq m B) 1694 sq m C) 1594 sq m D) 1756 sq.m E) 1896 sq.m    4.  If both 112 and 33 are factors of the number a * 43 * 62 * 1311, then what is the smallest possible value of a? A)  121 B)  3267 C)  363 D)  33 E)  None of the above    5.  What is the radius of the incircle of the triangle whose sides measure 5, 12 and 13 units? A) 2 units B) 12 units C) 6.5 units D) 6 units E) 7.5 units

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