Q1. How many ways can 5 people be lined up to get a bus if a certain 3 persons insist on following each other?

a. 20 b. 36 c. 120 d. 360

Q2. A town has 2 fire engineers operating independently.The prbability that a specific fire engine is available when needed is 0.95. What is the prbability that neither is available when needed?

a. 0.0025 b. 0.05 c. 0.10 d. 0.25