You have a jar with 60 jelly beans. you know that 1/3 of the jelly beans are yellow, 1/4 of them are white and the rest is red. you are not allowed to look. how many beans do you have to take out to be absolutely sure to get at least one yellow one?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.