Evaluate 5!

Problem

5!

Solution

1. Identify the factorial notation, where n! represents the product of all positive integers from n down to 1

2. Expand the expression into its constituent factors.

5!=5×4×3×2×1

3. Multiply the numbers sequentially to find the total product.

5×4=20

20×3=60

60×2=120

120×1=120

Final Answer

5!=120

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