1. The distance from town A to town B is five miles. C is six miles from B. Which of the following could be the distance from A to C? I 11 II 1 III 7 A. I only B. II only C. I and II only D. II and III only E. I, II, or III. Correct Answer: E 解析: Do not assume that AB and C are on a straight line. Make a diagram with A and B marked 5 miles apart. Draw a circle centered on B, with radius 6. C could be anywhere on this circle. The minimum distance will be 1, and maximum 11, but anywhere in between is possible. 2. √5 percent of 5√5 = A. 0.05 B. 0.25 C. 0.5 D. 2.5 E. 25 Correct Answer: B 解析: We can write the statement mathematically, using x to mean ‘of’ and /100 for ‘per cent’. So ( √5/100) x 5√5 = 5 x 5 /100 = 0.25 3. If pqr = 1 , rst = 0 , and spr = 0, which of the following must be zero? A. P B. Q C. R D. S E. T Correct Answer: D 解析: If pqr = 1, none of these variable can be zero. Since spr = 0 , and since p and r are not zero, s must be zero. (Note that although rst = 0, and so either s or t must be zero, this is not sufficient to state which must be zero) 4.  A. 1/5 B. 6/5 C. 6³ D. 64 / 5 E. 64 Correct Answer: E 解析: 65 = 64x 6 (64 x 6) - 64 = 64(6 - 1) = 64 x 5 Now, dividing by 5 will give us 64 5. -20 , -16 , -12 , -8 .... In the sequence above, each term after the first is 4 greater than the preceding term. Which of the following could not be a term in the sequence? A. 0 B. 200 C. 440 D. 668 E. 762 Correct Answer: E 解析: All terms in the sequence will be multiples of 4. 762 is not a multiple of 4 | 
