Topics in Contemporary Math (MAT 1171) <- Courses <- Sean Forman <- You Are Here
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1) (5 points) A computer username contains two letters followed by six digits. How many usernames are possible? How many usernames will start with A and end with 8 or 9?
2) (5 points) A gumball machine is full of four different flavors of gumballs, (CH)erry, (GR)ape, (L)emon, and (A)pple. When you place a quarter in the gum ball machine you are given two randomly selected gum balls. What is the sample size for this experiment and how large is it?
3) (5 points) There are 30 students in this class. How many ways could I select four students to wash my car next weekend?