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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.  What is the equation of a circle of radius 6 units centered at (3, 2)? A)  x2 + y2 + 6x – 4y = 23 B)  x2 + y2 - 6x + 4y = 23 C)  x2 + y2 + 6x + 4y = 23 D)  x2 + y2 - 6x – 4y = - 23 E)  x2 + y2 - 6x – 4y = 23    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.  The average of 5 consecutive integers starting with m as the first integer is n. What is the average of 9 consecutive integers that start with m+2? A) m + 4 B) n + 6 C) n + 3 D) m + 5 E) n + 4    5.  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

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