1. A ________ is an ordered arrangement of r objects chosen from n distinct objects without repetition....

Question:

1. A ________ is an ordered arrangement of r objects chosen from n distinct objects without repetition.
2. A ________ is an arrangement of r objects chosen from n distinct objects without repetition and without regard to order.
3. True or False: In a combination problem, order is not important.
4. The factorial symbol, n!, is defined as n! = ________ and 0! = ________.