How many ways can you purchase 2 CDs if there are 3 to choose from, 4 cassettes if there are 4 to choose from, and 2 DVDs if there are 5 to choose from?

Question

aaronq · Answer

2 cds   so you either choose 1 and 2, or 2 and 3, or 2 and 3.. so 3 ways

aaronq · Answer

4 cassettes (who buys cassettes anyways) out of 4?  only one way since you have to buy them all

anonymous · Answer

Is it 30?

aaronq · Answer

2 dvds out of 5..  so 1 and 2, or 1 and 3, or 1 and 4, or 1 and 5, or 2 and 3, or 2, and 4, or 2 and 5, or 3, and 4, or 3, and 5, or 4 and 5... soo 10