问答题Any decimal that has a finite number of nonzero digits is a terminating decimal. For example, 16, 12.43, and 0.26 are all terminating decimals. If a and b are positive integers and the ratio a/b is expressed as a decimal, is a/b a terminating decimal?  (1) b=5  (2) 70

问答题
Any decimal that has a finite number of nonzero digits is a terminating decimal. For example, 16, 12.43, and 0.26 are all terminating decimals. If a and b are positive integers and the ratio a/b is expressed as a decimal, is a/b a terminating decimal?  (1) b=5  (2) 70

参考解析

解析:
条件2无法得出结论;由条件1可知,a/b是有尽小数,故本题选A项。

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