THE PUZZLET PAGE

PUZZLET 054

Empty Bottles


1,000 bottles are empty. Every 2nd bottle is now filled with water. After this, every 3rd bottle is examined.

If it's empty, it has to be filled. If it already contained water, it has to be emptied.  The whole process is repeated for every 4th bottle, then every 5th, and so on up to the 1,000th.

At the end of the process, what bottles, if any, will be empty?
Bottles


MAIN MENU
SOLUTION
ARCHIVES

Site design/maintenance: Dave Ellis E-mail me!
Last Updated: January 12th, 2010.