### Questions of Test: GRE Quantitative Practice Test

 1 ```Elephants in a zoo require approximately 150 pounds of food per day. Elephants in the wild require approximately 315 pounds of food per day. Column A:      The amount of food required by three zoo elephants for one week  Column B: The amount of food required by five wild elephants for two days``` 2 `S = {y-z, x}. The mean of set S is 3y. What is the unknown member of the set, x, in terms of y and z?` 3 ```Colored marbles are drawn at random from a bag without replacing any. In the bag are four clear marbles and seven black marbles. Column A: The probability of drawing two clear marbles Column B: The probability of drawing three black marbles``` 4 `(0.00020/0.00001)·(0.030/0.002)` 5 ```Column A: (7!)(3!) / (5!)(2!) Column B: 5!``` 6 ```Column A: (√7 + 13) (√7 - 13) Column B: - (13 + √7) (13- √7)``` 7 ```The sum of the digits of a certain two-digit number is 7. Reversing its digits creates a second number which is larger than the first by 9. The first number is   I. 43 II. 25 III. 34``` 8 ```Column A: The area of a circle with diameter 26 Column B: The area between two concentric circles with radii 15 and 6``` 9 `An electronics store had a 10% off sale. Items that did not sell were marked down another 10%, and then what was left was marked down another 15% for clearance. A certain item’s original price before the sales was \$150. What was its clearance price?` 10 ```(-1)-x = -1 and x is positive integer ≠ 0 Column A: 3 Column B: x```