The number of significant figures in 0.007 is

Options

A. 4
B. 2
C. 3
D. 1

Answer

To determine the number of significant figures in the number 0.007, we can follow these steps:

### Step 1: Identify the number
The number given is 0.007.

### Step 2: Recognize leading zeros
In the number 0.007, the zeros before the digit '7' are leading zeros. Leading zeros are the zeros that appear to the left of the first non-zero digit.

### Step 3: Determine significance of leading zeros
Leading zeros are not considered significant figures. Therefore, we do not count the zeros in front of '7'.

### Step 4: Count the significant figures
The only digit that is significant in the number 0.007 is '7'. Thus, we have:

- Leading zeros: 0 (not counted)
- Significant digit: 7 (counted as 1 significant figure)

### Conclusion
The total number of significant figures in the number 0.007 is **1**.

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