Factorial

Front

What is the definition of factorial?

Back

The factorial of a non-negative integer n, denoted as n!, is the product of all positive integers less than or equal to n.

Front

What is the value of 0! ?

Back

0! = 1, by definition.

Front

Calculate: 5!

Back

5! = 5 × 4 × 3 × 2 × 1 = 120.

Front

What is the relationship between n! and (n-1)! ?

Back

n! = n × (n-1)!.

Front

Evaluate: 6! / 5!

Back

6! / 5! = 6.

Front

What does the notation n! represent?

Back

n! represents the factorial of n.

Front

Expand 3!

Back

3! = 3 × 2 × 1 = 6.

Front

What is 1! equal to?

Back

1! = 1.

Front

Calculate: 7! - 6!

Back

7! - 6! = 5040 - 720 = 4320.

Front

What is the factorial of a negative number?

Back

The factorial is not defined for negative integers.