Convert the following products into factorial: `1. 3. 5. 7. 9 (2n-1)`

Explanation

To convert the product of the first n odd numbers, represented as \( 1 \cdot 3 \cdot 5 \cdots (2n-1) \), into factorial form, we can follow these steps:

### Step 1: Understand the Product of Odd Numbers
The product of the first n odd numbers can be expressed as:
\[ P = 1 \cdot 3 \cdot 5 \cdots (2n-1) \]

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