1. Today we have a Magic Square. That's a sequence of consecutive positive numbers arranged in checker-board type formation. The columns, the rows, and the two main diagonals all add up to the same magic total - and that's 1974. The greatest number in the sequence happens to be odd. What must it be - and how many numbers will the sequence contain?

16 numbers, from 486-501

14 numbers 471-485

15 numbers from 487-502