Three men went to buy eggs from an eggs seller:
- The first ordered half of the seller's stock plus half of an egg.
- The second ordered half of what's left in the stock plus half of an egg.
- The third ordered half of what's left in the stock plus half of an egg.
How many eggs did the seller have in his stock knowing that:
- No eggs were broken in the process.
- The seller's stock is now empty (no eggs left).