Question
If the digits of 5679432018 are rearranged in descending
order, what is the sum of the 1st, 2nd, 4th, 7th, and 9th digits?Solution
5 6 7 9 4 3 2 0 1 8
9 8 7 6 5 4 3 2 1 0
Sum = 9 + 8 + 6 + 3 + 1 = 27.
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