DSQ: Calculating probability Practice Test

A monster is holding a brown paper bag filled with cookies. Inside the bag there are two types of cookies, chocolate chip and oatmeal raisin. If the monster pulls one cookie out at random, what is the probability that he pulls out a chocolate chip cookie.

1. There are a total of 24 cookies in the bag.

2. There are 8 more chocolate chip cookies in the bag than oatmeal raisin cookies.

A fair coin is tossed a given number of times. What is the probability that three or more of the tosses will come up heads?

1. The number of times the coin is tossed is four.

2. The previous day, the coin was tossed ten times, and heads came up eight times.