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Yesterday an Italian restaurant gave a free drink to the 9th customer and every 9th customer thereafter,.a free salad to the 12th customer and every 12th customer thereafter, and a free slice of pizza to the 15th customer and every 15th customer thereafter. If 2 customers were given both a free drink and a free slice of pizza and if 11 customers were given a free salad, which of the following could be the number of customers at the restaurant yesterday?
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· 相关考点
1.7.1 公倍数与最小公倍数
以上解析由 考满分老师提供。
