1)860A is a 4-digit number which is divisible by 23. Find A. (How can I do it quickly
without using a calculator?)
2)係咪有D數如果加哂佢所有位,咁計出來果個數就會被除得盡?
收錄日期: 2021-04-16 15:50:06
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https://hk.answers.yahoo.com/question/index?qid=20130522000051KK00129