The Jinx
& Birthday Puzzles 
Student's
page

Here is a puzzle
that will
always jinx you. Follow these steps.
Pick a number ______
Here's how:
Can you find a number that will not always end up as 13? If not, why not?

Puzzle #2: The Birthday
Puzzle Create a Birthday puzzle spreadsheet for the puzzle below. See if you can figure out what has to be done in order to figure out how this "mind reading" trick works.
Hint: If your birthday is on November 5th the number you should get from the spreadsheet is 1310. How can you find the date of your birthday from that number? (Hint Your birthday is 1105 so what if you subtracted 205 from 1310?) Back to home page 