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单选题
How many positive integers less than 70 are equal to the product of a positive multiple of 5 and an even number?
A

4

B

6

C

9

D

10

E

11

参考答案

参考解析
解析：
All even multiples of 5 must be multiples of 10. So the multiples of 10 between 0 and 70 are 10, 20, 30, 40, 50 and 60. That’s 6 altogether.
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