I present to you a deck of 4 cards. Each card has on one side a letter of the alphabet, and on the other side a single digit from 0-9.

I propose a hypothesis that may apply to this deck:
If the letter is 'E', then the number on the other side is '4'.

I then drop the 4 cards on the table, and you see: 'B', '7', 'E', '4' (on the respective cards).

Which of the 4 cards must you turn over to verify or disprove my hypothesis?

(In reply to solution-and i did not steal it, promise by Linda)

I’m glad you didn’t steal it…but you are still wrong. O.O.O. got it right first and several others have explained the logic.

I agree with SteveH. It’s amazing that such a seemingly simple problem has generated so many comments.

Posted by Nosher on 2004-12-16 02:34:07