Exploring Permutations and Combinations

What is the total number of permutations for three objects?

• 12

• 9

• 6

• 3

How many combinations can be made from four objects?

• 4

• 1

• 12

• 24

How many permutations can be made with four objects?

• 48

• 36

• 24

• 12

How many permutations are there for two objects?

• 1

• 2

• 4

• 3

What does 5 factorial (5!) equal to?

• 240

• 180

• 120

• 60

What is the shorthand notation for 3 times 2 times 1?

• 6!

• 3*2*1

• 3+2+1

• 3!

What does the factorial symbol (!) represent?

• Summation

• Multiplication to 1

• Division by 1

• Subtraction to 1

How many different permutations can be made from 7 objects?

• 5040

• 24

• 720

• 120

What is the value of 0 factorial (0!)?

• Undefined

• 0

• 1

• 2

What is the official formula for calculating permutations?

• r! / n!

• n! / (n-r)!

• n! / r!

• n!