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SAT考试数学练习题SAT Math Practice 7
1. If a2 = 12, then a4 =
A. 144
B. 72
C. 36
D. 24
E. 16
2. If n is even, which of the following cannot be odd?
I n + 3
II 3n
III n2 - 1
A. I only
B. II only
C. III only
D. I and II only
E. I, II and III
3. One side of a triangle has length 8 and a second side has length 5. Which of the following could be the area of the triangle?
I 24
II 20
III 5
A. I only
B. II only
C. III only
D. II and III only
E. I, II and III
4. A certain animal in the zoo has consumed 39 pounds of food in six days. If it continues to eat at the same rate, in how many more days will its total consumption be 91 pounds?
A. 12
B. 11
C. 10
D. 9
E. 8
5. A perfect cube is an integer whose cube root is an integer. For example, 27, 64 and 125 are perfect cubes. If p and q are perfect cubes, which of the following will not necessarily be a perfect cube?
A. 8p
B. pq
C. pq + 27
D. -p
E. (p - q)6