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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.  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    3.  What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3? A) 897 B) 164,850 C) 164,749 D) 149,700 E) 156,720    4.  The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group? A) 22 years B) 30 years C) 44 years D) 32 years E) None of these    5.  Which of the following inequalities have a finite range of values of "x" satisfying them? A) x2 + 5x + 6 > 0 B) |x + 2| > 4 C) 9x - 7 < 3x + 14 D) x2 - 4x + 3 < 0 E) (B) and (D)

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