PP Presentation

A set of four 3x5 cards is dealt on a table as shown below. Each card has a letter on one side and a number on the other.

The dealer of the cards proposes that they satisfy the rule:

“If there is a vowel on one side of the card, then there is an odd number on the other.”

What is the smallest number of cards you have to turn over to see if the rule is satisfied?

Previous slide Next slide Back to the first slide View Graphic Version