If the first and third digits of each of the following numbers are interchanged, how many numbers will become a perfect cube? 512, 126, 343, 217, 728

This question is based on the five three-digit numbers given below: (Left) 905 684 328 472 258 (Right) What will be the resultant if the first digit of the second highest number is subtracted from the third digit of the lowest number?

This question is based on the five, three-digit numbers given below. (Left) 761 693 728 643 723 (Right) (Example: 697 – First digit = 6, second digit = 9 and third digit = 7) NOTE: All operations are to be done from left to right. What will be the result if the second digit of the highest number is added to the third digit of the lowest number?