If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 1543862, what will be the sum of the digits that are second from the left and third from the right?
12
Number: 1543862. Adding 1 to odd digits and subtracting 2 from even digits: 1→2, 5→6, 4→2, 3→4, 8→6, 6→4, 2→0, giving the new number 2624604...
The digit second from the left (originally 5, now 6) and the digit third from the right (originally 8, now 6): 6 + 6 = 12.
Hence, this is the correct answer.
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