Exercises for Hanchan:
(note to self, move this to private/password protected tomorrow)
1) Written out in base 10, the number ends in how many zeroes?
2) The product of the 12-digit number and the 12-digit number is the 24-digit number . Find the digit .
Hey, Ben, this is K. Apparently I can edit this. I can also see all your private posts. You should probably fix this.