How do you know when you've made it – finally become a big-time celebrity?
For Zach Johnson , he figures he's made it because he's become the subject of a problem in a high-school math textbook.
Zach got a tweet from a student named Austin Adams  on Monday telling him that ''my math textbook showing you some love!''
In case you can't read the print in the photo above, the challenge is this:
''Zach Johnson won the Masters Tournament in 2007. Use the Law of Syllogism to draw a valid conclusion from each set of statements, if possible, If no valid conclusion can be drawn, write 'no valid conclusion' and explain your reasoning.''
1. If Zach Johnson's score is lower than the other golfers at the end of the tournament, then he wins the tournament.
2. If a golfer wins the Masters Tournament, then he gets a green jacket.
So, does Zach's Masters victory add up? It's been a real long time since I took algebra and geometry, but in simple terms the Law of Syllogism involves deductive reasoning – or as we used to call them, ''if/then'' exercises. Specifically, if you know that the first part of a statement is true, then the second part also is true.
In this case, we know that Zach's score at the 2007 Masters was lower than his competitors, so he won the tournament. And because he won the tournament, he got a green jacket. So, the correct answer is: Zach Johnson won the Masters, so he got a green jacket.
So there you go, Adam. Thanks for sharing – and now that this assignment is done, get on that history.