Write the properties of magnetic poles.

Explanation

### Step-by-Step Solution:

1. **Understanding Magnetic Poles**:
- A magnet has two distinct ends known as poles: the North Pole and the South Pole.

2. **Property 1: Existence in Pairs**:
- Magnetic poles always exist in pairs. This means that in any magnet, you will find both a North Pole and a South Pole. It is impossible to have a magnet with only one pole.

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