How many colours are present in a rainbow ? Name them.

Explanation

To answer the question "How many colors are present in a rainbow? Name them," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept of a Rainbow**:
- A rainbow is formed when light is refracted, dispersed, and reflected in water droplets, creating a spectrum of colors.

2. **Identifying the Number of Colors**:
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