A young man from Brooklyn, NY was applying for a job, but the interviewer told him he had to take and pass a math test first.
The interviewer hands him a piece of paper and says, "Without using numbers, represent the number 9."
"Dat's easy," the young man says, and he proceeds to draw three trees.
"What's this?" the interviewer asks.
The young man replies, "Tree and tree and tree makes a nine."
"Fair enough," the interviewer says. Now use the same rules, but this time the number is 99."
The young man picks up the picture he has just drawn and makes a smudge on each tree. He then explains, "Each of da trees is dirty now. So now it's a dirty tree, and dirty tree and dirty tree. Dat's now a 99."
The interviewer is impressed, but says, "OK. Now for the last question. Same rules again, but this time the number is an even 100."
Without hesitation, the young man makes a little mark at the base of each tree and hands him back the picture.
The interviewer looks at the picture and remarks, "How can this possibly represent 100?"
The young man explains, "A little dog came along and pooped by each tree. So now you got a dirty tree and a turd, dirty tree and a turd, and dirty tree and a turd. Dat makes one hundred."
He was hired.