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

Practice Questions

Q1
What is the value of the expression 5! (5 factorial)? (2020)
  1. 120
  2. 60
  3. 100
  4. 150

Questions & Step-by-Step Solutions

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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