In how many ways can you send the postcards

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Reference no: EM132178433

On a You want to send postcards to 12 friends. In the shop, there are only 3 kinds of postcards.

In how many ways can you send the postcards if

(a) there is a large number of each kind of postcards, and you want to send one card for each friend.

(b) there is a large number of each kind of postcards, and you are willing to send one or more postcards to each friend, but no one should get two identical postcards.

Reference no: EM132178433

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