The figure 0.02450 has 4 significant figures.

Explanation

To determine the number of significant figures in the number 0.02450, we can follow these steps based on the rules of significant figures.

### Step-by-Step Solution:

1. **Identify Non-Zero Digits**:
- The first rule states that all non-zero digits are significant.
- In the number 0.02450, the non-zero digits are 2, 4, and 5.
- Therefore, 2, 4, and 5 are significant figures.
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