describe each sample
1. to pick 3 students from a class of 30, a calculator is used to generate random numbers between 1 and 30
2. the first ten people exiting a movie theatre were surveyed as to how many times they had seen the movie
3. how many ways can 8 students stand in a line for movie tickets?
4. darcie's dad is shopping for a car. of the 11 models he has considered, he has decided to test drive 3 cars. in how many orders can he drive the 3 cars?
5. there are 10 digits on the keypad at an automated teller machine. how many four-digit passwords are available if no digit is repeated?
6. how many ways can yvette choose 2 greeting cards from 8 cards?