请教一题数学题

2020-6-7 17:36| 发布者: lilac227 | 查看: 2346| 原文链接

题目： A teacher wants her students to guess the three-digit number that she is thinking. She gives these clues:

         1) It is divisible by both 3 and 11.
         2) If you subtract one, the result is divisible by both 2 and 7.

         Which number is it?

请给出解题步骤！谢谢啦

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