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Squares Probability (Posted on 2003-06-19) Difficulty: 4 of 5
Suppose you had number cards in a deck, such that you had 2 2s, 3 3s, 7 7s, and 8 8s. (and no other cards in that deck)

If you were to shuffle the deck (consider the cards to be random after shuffling) and take off the first 4 cards, (such that the first card is thousands place, the second card is the hundreds place, so on), what is the probability that this number will be a perfect square?? Also, how would you find this probability without "trial and error" or "brute force"?

See The Solution Submitted by Gamer    
Rating: 3.7000 (10 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Question re: Solution | Comment 2 of 13 |
(In reply to Solution by Hank)

Wow, that was a short lived problem... *sigh*, but do you know why that is?

I think this might stump some people when they first look at it. (I would hope so)
  Posted by Gamer on 2003-06-19 05:35:13

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