The boss scratches his head and says, "How on earth do you get that to represent 99?" "Each of da trees is dirty now. So, it's dirty tree, and dirty tree, and dirty tree. Dat is 99." "All right, last question. Same rules again, but represent the number 100." The Italian man stares into space some more, then he picks up the picture again and makes a little mark at the base of each tree and says, "Ere you go. One hundred." The boss looks at the attempt. "You must be nuts if you think that ...