1. Of the following, which is most nearly equal to 2/3?

A.3/4

B.5/6

C.7/9

D.11/15

E.15/21

答案：E

2. One month Mary used 1/6 of her monthly salary for a car payment and 1/4 more than the car payment for rent. What fraction of her monthly salary did Mary use that month for the car payment and rent combined?

A.5/24

B.3/8

C.5/12

D.1/2

　1.In a list of numbers, the first number is 3, the second is 4, and each subsequent number is the sum of all the preceding numbers in the list. If the 20th number in the list is x, what is the 25th number in the list?

A.7x

B.16x

C.32x

D.35x

E.161x

答案：C

2.Which of the following numbers is both a factor of 48 and a multiple of 6?

A.2

B.8

C.12

D.16