For every question, four probable answers bear in letters (A), (B), (C) and (D) are given. Only one out of these is correct. You have to choose the orrect answer.
Difference of greatest number of 7 digits to the smallest number of8 digits is

Options

A. 10
B. 1
C. 101
D. 100

Answer

To find the difference between the greatest number of 7 digits and the smallest number of 8 digits, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the smallest 8-digit number**:
- The smallest 8-digit number is 10,000,000. This is because it is the first number that has 8 digits.

2. **Identify the greatest 7-digit number**:
- The greatest 7-digit number is 9,999,999. This is the highest number that can be formed with 7 digits.

3. **Calculate the difference**:
- Now, we need to find the difference between the smallest 8-digit number and the greatest 7-digit number.
- We perform the subtraction:
\[ 10,000,000 - 9,999,999 \]

4. **Perform the subtraction**:
- When we subtract, we get:
\[ 10,000,000 - 9,999,999 = 1 \]

5. **Conclusion**:
- Therefore, the difference between the greatest number of 7 digits and the smallest number of 8 digits is 1.

### Final Answer:
The correct answer is (B) 1.