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?

How about NOT turning over any cards, because the "E" and the "4" are face up.  So this will Disprove the hypothesis.

If you flip a card, one is under an assumption that there are more than one of the same number or alphabet.

Is it to prove that we should not assume?

Posted by NetGoofy on 2005-03-23 19:05:04