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Formal Reasoning (Posted on 2004-12-15) Difficulty: 2 of 5
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?

See The Solution Submitted by SilverKnight    
Rating: 3.0000 (22 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
the answer | Comment 35 of 60 |
ok, i just want to say first and foremost that if i got this right and no one else did then yall are dumb cuz im only 14. ok, here it goes. you dont have to turn any of the over because the E and 4 are already visible. this is presuming that the letters/numbers cant be repeated
  Posted by derek on 2005-01-19 23:46:10
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