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What is the number between 149000 and 150000 which has a tens digit that is 7 more than its ones digit. The sum of the tens ans ones digit is 9 and the hundreds digit is zero

  • Math -

    Since the hundreds digit is zero, we just have to concentrate on the last two digits.
    let the unit digit be x
    then the tens digit = x+7

    x+x+7 = 9
    the unit digit is 1, the tens digit is 8 and our number is

  • Math -

    The answer is, in fact, 149,981.

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