`? xx 11 = 555555`

Options

A. 505
B. 5050
C. 50505
D. 5005

Answer

To solve the equation `? xx 11 = 555555`, we need to find the value of the question mark represented by `?`. Let's denote the question mark as \( x \).

### Step-by-Step Solution:

1. **Set Up the Equation**:
We start with the equation:
\[ x \times 11 = 555555 \]

2. **Isolate \( x \)**:
To find \( x \), we need to divide both sides of the equation by 11:
\[ x = \frac{555555}{11} \]

3. **Perform the Division**:
Now we will divide 555555 by 11. We can do this step by step:
- First, divide the first two digits (55) by 11:
\[ 55 \div 11 = 5 \]
- Next, bring down the next digit (5) to make it 05:
\[ 05 \div 11 = 0 \]
- Now bring down the next digit (5) to make it 55:
\[ 55 \div 11 = 5 \]
- Again, bring down the next digit (5) to make it 05:
\[ 05 \div 11 = 0 \]
- Finally, bring down the last digit (5) to make it 55:
\[ 55 \div 11 = 5 \]

Putting it all together, we have:
\[ 555555 \div 11 = 50505 \]

4. **Final Result**:
Thus, we find that:
\[ x = 50505 \]

5. **Conclusion**:
Therefore, the value of the question mark \( ? \) is:
\[ \boxed{50505} \]