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  • dazzling
    dazzling

    @dazzling-nzI4vf • 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.

    0
  • dazzling
    dazzling

    @dazzling-nzI4vf • Dec 20, 2009

    hence a + b = 10

    0