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A set consists of all three-digit positive integers with the following properties. Each integer is of the form JKL, where J, K, and L are digits; all the digits are nonzero; and the two-digit integers JK and KL are each divisible by 9. HOW many integers are in the set?
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· 相关考点
1.6.5 整除的定义与判定
以上解析由 考满分老师提供。
