問題詳情
2.以數字 0～25 分別代表字母 A～Z，則若收到的密文是 CKHC，則解開的明文的四個字母為何？（5 分）
參考答案
答案：B
難度：簡單0.743363
統計：A(14),B(336),C(55),D(25),E(0)
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