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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.  For what values of 'k' will the pair of equations 3x + 4y = 12 and kx + 12y = 30 not have a unique solution? A) 12 B) 9 C) 3 D) 7.5 E) 2.5    2.  A wheel of a car of radius 21 cms is rotating at 600 RPM. What is the speed of the car in km/hr? A) 79.2 km/hr B) 47.52 km/hr C) 7.92 km/hr D) 39.6 km/hr E) 3.96 km/hr    3.  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    4.  Robin earns 30% more than Erica. Charles earns 60% more than Erica. How much % is the wages earned by Charles more than that earned by Robin? A) 23% B) 18.75% C) 30% D) 50% E) 100%    5.  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

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