All the six-digit numbers that can be formed using the digits 0, 1, 6, 7, 8 and 9 are written. If each digit can be used only once, what is the largest of these numbers that is divisible by 11?
The largest number you can make out of the six digits, 0, 1, 6, 7, 8, 9 is =980,617 which is divisible by 11.
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