Step 1: The Trick
There is a number that appears in all four corners of a $1 bill. the point of this trick is to guess that number without seeing it.
Step 2: The dollar bill
Ask a member of your audience to take a dollar bill out of their wallet and fold it as shown to hide the corner numbers.
Step 3: How its done
There are two ways to read this portion of the bill to learn the numbers in the corners. the first letter in the serial number corresponds to the number in the corners and also the letter in the circle on the left side of the bill.
A=1 B=2 C=3.....