FTCE General Knowledge Math Practice Test 2025 - Free Practice Questions and Study Guide

Question: 1 / 400

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

120

The value of 5! (5 factorial) is calculated by multiplying all positive integers from 1 up to 5. Specifically, this means:

5! = 5 × 4 × 3 × 2 × 1.

Breaking it down:

- Start with 5.

- Multiply by 4: 5 × 4 = 20.

- Then multiply by 3: 20 × 3 = 60.

- Next, multiply by 2: 60 × 2 = 120.

- Finally, multiply by 1, which does not change the product.

Thus, the final result is 120. This calculation confirms that the correct answer reflects the definition of factorial, where n! = n × (n-1) × ... × 2 × 1. Consequently, the value of 5! is indeed 120.

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