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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.  How many diagonals does a 63-sided convex polygon have? A) 3780 B) 1890 C) 3843 D) 3906 E) 1953    2.  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    3.  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    4.  Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 and 150 inclusive. What is the difference between the sum of elements of set B and that of set A? A) 2500 B) 5050 C) 11325 D) 6275 E) 2550    5.  What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 9, 40 and 41? A) 6 B) 4 C) 24.5 D) 20.5 E)  12.5

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