5
The following question is based on the given seven, 3-digit numbers. (Left) 621, 443, 227, 316, 625, 118, 231 (Right) (For example, 456 : 6 = digit in unit's place, 5 = digit in ten's place, 4 = digit in hundred's place) Note - All operations to be done from left to right. If 5 is added to the digit in ten's place of each number and 1 is subtracted from the digit in unit's place of each number, which digit will repeated the greatest number of times in the transformed number series thus formed?