Homework Help: probability

Posted by Madison on Monday, February 14, 2011 at 4:16pm.

I was asked to find the probaility if a board game uses the deck of 20 cards. And find how many have the number 3. I came up with 4/20 and was told that I'm on the right track but I need to find P(3 and 3) with replacement and without replacement.

What does this mean?

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