Originally Posted by

**Kiran** 1. Suppose that one third of the cards in a scratch-and-win promotion gives a prize.

a) What is the probability that you will not win a prize until your second try?

b) What is the probability of winning within your first two tries?

c) What is the expected number of cards you would have to try before winning a prize?

I would really appreciate it if someone can help with this problem. it is due tomm so i really need to get it done. I have looked in the textbook and i have a feeling that it may have something to do with geometric distributions but i do not know what to do..

thanks