For those of you who are interested in the odds.

Stand somewhere and mark down the final two digits on the license plates of the next twenty cars that pass. Give four to one odds that two of the last sets of two digits will match. Do not specify two digits, simply say that two will be the same.

There are 100 possible two-digit numbers going from 00 to 99. Two will match. However, ensure with your betting partner that you play seven times. Therefore, you will pay four dollars if no two numbers match. The person with whom you bet will give you one dollar each time they do.

You will make a few bucks.