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Summer Clouds moderators

24/06/2017 at 10:28
Answers
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If the digits A, B, and C are added, the sum is the two-digits number AB as shown at the right. What is the value of C?
A B + C A B




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  • ...
    Phan Thanh Tinh Coordinator 24/06/2017 at 11:47

    \(A+B+C=\overline{AB}\Rightarrow A+B+C=10A+B\Rightarrow C=9A\)

    \(C\le9\Rightarrow A\le1\) but \(A\ne0\Rightarrow A=1\Rightarrow C=9\)

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    Nguyễn Anh Tuấn 24/06/2017 at 12:59

    There are many cases but the easiest case is:

    A = 0

    B = 0

    C = 0

    (YOU ARE BEAUTIFUL)

    Phiên Dịch

    có rất nhiều trường hợp nhưng 1 trường hợp dêc nhất là :

    a=0

    b=0

    c=0

    (Các BẠN Tự Tính nhé)


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