SAT课程
17600269130
7*24小时专业老师服务
SAT课程
17600269130
7*24小时专业老师服务
SAT数学练习题 含详细答案及解析(7)
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下面是几道SAT数学练习题，每道题目后面都有答案和详细的解析，希望同学们在练习的时候先不看答案，看看自己的能做对几道题，然后再与答案对照，找出错题原因，针对自己的SAT数学复习进行查漏补缺。
1. If a² = 12, then a4 =
A. 144
B. 72
C. 36
D. 24
E. 16
Correct Answer: A
解析:
a4 = a2 x a2 = 12 x 12 = 144
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
Correct Answer: B
解析:
In case I , even plus odd will give odd. In case II, odd times even will give
even. In case III even squared is even, and even minus odd is odd. (You can
check this by using an easy even number like 2 in place of n). Only case II
cannot be odd.
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