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Trading cards (Posted on 2002-05-03) Difficulty: 3 of 5
A trading card series has 200 different cards in it, which are sold in 5-card packages.

Each package has a random sampling of the cards (assume that any card of the 200 has an equal chance of being in a package).

On the average, how many packages will need to be bought to collect the complete series if...

  • A: all the cards in a package will always be different
  • B: a package can have repeats

  • See The Solution Submitted by levik    
    Rating: 4.1818 (11 votes)

    Comments: ( Back to comment list | You must be logged in to post comments.)
    trading cards | Comment 16 of 39 |
    since from (b) I have to assume an infinite number of cards to randomly choose from. In which case probability is meaningless. The probability is a very large number.Have to be carefull of the difference between odds and probability of course. But even so.......
      Posted by terry on 2002-12-25 06:51:56
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