The difference between the highest and lowest two digit numbers is :

Options

A. 88
B. 89
C. 22
D. 99

Answer

To find the difference between the highest and lowest two-digit numbers, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the highest two-digit number**:
The highest two-digit number is 99.

2. **Identify the lowest two-digit number**:
The lowest two-digit number is 10.

3. **Calculate the difference**:
To find the difference between the highest and lowest two-digit numbers, we subtract the lowest number from the highest number:
\[ \text{Difference} = \text{Highest two-digit number} - \text{Lowest two-digit number} \]
\[ \text{Difference} = 99 - 10 \]

4. **Perform the subtraction**:
Now, we perform the subtraction:
\[ 99 - 10 = 89 \]

5. **Conclusion**:
Therefore, the difference between the highest and lowest two-digit numbers is 89.