[計量] 請問一題
Let n denote the smallest positive integer that is divisible by both 4 and 9,
and whose base-10 representation consists of only 4's and 9's,with at least
one of each.What are the last four digits of n ?
(A)4,444 (B)4,494 (C)4,944 (D)9,444 (E)9,944
我看不太懂題意,有人可以幫忙解惑一下嗎？ 謝謝
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