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

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