SSAT數(shù)學(xué)免費(fèi)練習(xí)（五）
1. What is the average of the first 50 positive integers?
A. 25
B. 25.5
C. 26
D. 26.5
E. 27
2. If ab is negative, which of the following CANNOT be negative?
A. b-a
B. a-b
C. a2b
D. ab2
E. a2b2
3. In a certain set of numbers, the ratio of integers to nonintegers is 1:4. What percent of the numbers in the set are integers?
A. 20%
B. 25%
C. 40%
D. 75%
E. 80%
Great Practice, great score!
1. What is the average of the first 50 positive integers?
A. 25
B. 25.5
C. 26
D. 26.5
E. 27
2. If ab is negative, which of the following CANNOT be negative?
A. b-a
B. a-b
C. a2b
D. ab2
E. a2b2
3. In a certain set of numbers, the ratio of integers to nonintegers is 1:4. What percent of the numbers in the set are integers?
A. 20%
B. 25%
C. 40%
D. 75%
E. 80%
Great Practice, great score!