THE MYSTIC ELEVEN.
(
Money Puzzles)
Can you find the largest possible number containing any nine of the ten
digits (calling nought a digit) that can be divided by 11 without a
remainder? Can you also find the smallest possible number produced in
the same way that is divisible by 11? Here is an example, where the
digit 5 has been omitted: 896743012. This number contains nine of the
digits and is divisible by 11, but it is neither the largest nor the
smallest number that will work.
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THE DIGITAL CENTURY.
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DIGITAL SQUARE NUMBERS.
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