The number of significant figures in a pure number 410 is

Options

A. Two
B. Three
C. One
D. Infinite

Answer

To determine the number of significant figures in the pure number 410, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pure Numbers**:
- A pure number is an exact number that does not have any uncertainty or decimal places. Examples include counts of objects (like 3 apples) or defined quantities (like 1 meter = 100 centimeters).

2. **Identifying the Number**:
- In this case, the number given is 410. We need to determine if it is a pure number or not.

3. **Analyzing the Number**:
- The number 410 can be interpreted in two ways:
- As a measured quantity (which would have a certain number of significant figures based on how it was measured).
- As a pure number (which is exact and has infinite significant figures).

4. **Conclusion**:
- Since 410 is treated as a pure number in this context, it is considered to have infinite significant figures. This is because pure numbers are exact and do not have any uncertainty associated with them.

5. **Final Answer**:
- Therefore, the number of significant figures in the pure number 410 is infinite.