Which has maximum number of significant figures ?

Options

A. `0.000010`
B. `0.216`
C. `2.1xx10^6`
D. `0.021`

Answer

To determine which number has the maximum number of significant figures, we will analyze each number provided in the question step by step.

### Step-by-Step Solution:

1. **Identify the Numbers**: Let's assume we have the following numbers to analyze for significant figures:
- A: 0.050300
- B: 0.216
- C: 320
- D: 0.0021

2. **Analyze Each Number**:
- **Number A: 0.050300**
- Leading zeros (0.05) are not significant.
- Non-zero digits (5, 3) are significant.
- The trailing zeros (00) after the decimal point are significant.
- Total significant figures = 4 (5, 3, and two trailing zeros).

- **Number B: 0.216**
- Leading zeros (0.) are not significant.
- All non-zero digits (2, 1, 6) are significant.
- Total significant figures = 3 (2, 1, 6).

- **Number C: 320**
- There are no leading zeros.
- The non-zero digits (3, 2) are significant.
- The trailing zero (0) is not significant because there is no decimal point.
- Total significant figures = 2 (3, 2).

- **Number D: 0.0021**
- Leading zeros (0.00) are not significant.
- Non-zero digits (2, 1) are significant.
- Total significant figures = 2 (2, 1).

3. **Compare the Significant Figures**:
- Number A: 4 significant figures
- Number B: 3 significant figures
- Number C: 2 significant figures
- Number D: 2 significant figures

4. **Conclusion**:
- The number with the maximum number of significant figures is **0.050300** (Number A) with a total of 4 significant figures.

### Final Answer:
**0.050300 has the maximum number of significant figures (4).**