digit sum

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  • #8532
    • Topics: 1
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    3986+2789=6775 digit sum=7

    however 6874 also got the same digit sum as the correct answer even though it is wrong

    can someone explain please?


    Abhishek R
    • Topics: 0
    • Replies: 33

    Hey Faruuq,

    Digit sum can only verify your answer with 90% accuracy.

    If you want a higher level of accuracy you can use the DS method in conjunction with the DD method. However even that is not 100%.

    The only way to be 100% sure your answer is correct, is to do the calculation again.

    Hope this clarifies.

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