What is the value of the expression 5! (5 factorial)? (2020)

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Question: What is the value of the expression 5! (5 factorial)? (2020)

Options:

Correct Answer: 120

Exam Year: 2020

Solution:

5! = 5 × 4 × 3 × 2 × 1 = 120.

What is the value of the expression 5! (5 factorial)? (2020)

What is the value of the expression 5! (5 factorial)? (2020)

Step 1: Understand what '5!' means. The '!' symbol means 'factorial'.
Step 2: Write down the definition of 5 factorial: 5! = 5 × 4 × 3 × 2 × 1.
Step 3: Start multiplying the numbers together from 5 down to 1.
Step 4: First, multiply 5 by 4. This equals 20.
Step 5: Next, take the result (20) and multiply it by 3. This equals 60.
Step 6: Now, take the result (60) and multiply it by 2. This equals 120.
Step 7: Finally, take the result (120) and multiply it by 1. This still equals 120.
Step 8: Therefore, the value of 5! is 120.

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