Question
If we increase each even digit by 1 and decrease each
odd digit by 2 in the number "897653456", and then arrange all the number in descending order from left to right, then which number will be 5 th from the right end after the rearrangement?Solution
8 9 7 6 5 3 4 5 6 9 7 5 7 3 1 5 3 7 9 7 7 7 5 5 3 3 1
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