Statistics
Simon tossed a coin 30 times. He got heads 12 times. What is the experimental probability of getting heads?
What is 2/5 remember: number of heads = 12 = 2 number of coins tossed = 30 = 5
How many different committees of 5 people can be chosen from 10 people?
What is 10!/5!5! = 252
An encyclopedia has eight volumes. How many ways can the eight volumes be replaced on the shelf?
What is 40,320