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$$x*$$ is defined as the 3-digit integer formed by reversing the digits of integer $$x$$; for instance, $$258*$$ is equal to $$852$$. $$R$$ is a 3-digit integer such that its units digit is $$2$$ greater than its hundreds digit.
Quantity A
$$R*-R$$
Quantity B
$$200$$
B显示答案
· 相关考点
1.1.1 数位与数值
以上解析由 考满分老师提供。
