GRE Exam Numerical Ability Probability

Each factor of 210 is inscribed on its own plastic ball, and all of the balls are placed in a jar. If a ball is randomly selected from the jar, what is the probability that the ball is inscribed with a multiple of 42? (A) 1/7 (B) 1/4 (C) 1/8 (D) 1/16

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GRE Other Question

New cars leave a car factory in a repeating pattern of red, blue, black, and gray cars. If the first car to exit the factory was red, what color is the 463rd car to exit the factory? A) Red B) blue C) black D) gray If a and c are positive integers and 4a + 3 = b and 4c + 1 = d, which of the following could be the value of b + d? (A) 46 (B) 58 (C) 68 (D) 74
(E) 82