If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 7418536, how many digits will appear more than once in the new number thus formed?

Each of the digits in the number 5943268 is arranged in descending order from left to right. What will be the sum of the digits that are second from the left and fourth from the right in the new number thus formed?

This question is based on the five three-digit numbers given below: (Left) 467 324 868 855 800 (Right) NOTE: All operations to be done from left to right. What will be the result if the first digit of the highest number is added to the third digit of the lowest number?