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  • Find a+b

    rengaraj

    Member

    Updated: Oct 16, 2024
    Views: 986
    Sir / madam,
    My question is

    4a3+984=13b7.13b7 is divisible by 11. Find a+b.

    Advance Thanks,
    R.Rengaraj
    0
    Replies
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Replies

  • dazzling

    Member • Dec 20, 2009

    i think the answer to question is :

    a = 1 and b=9

    hence 413 + 984 = 1397

    1397 is divisible by 11.

    because no number except 9 can make 13b7 divisible by 11.
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  • dazzling

    Member • Dec 20, 2009

    hence a + b = 10
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