What will come in place of the question mark (?) in the following questions ?
`104-21xx448-:16+1013=?^2`

Options

A. 17
B. 21
C. 33
D. 23

Answer

To solve the equation \( 104 - 21 \times 448 \div 16 + 1013 = ?^2 \), we will follow the order of operations, often remembered by the acronym BODMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction).

### Step-by-Step Solution:

1. **Identify the operations**: The equation consists of subtraction, multiplication, division, and addition.

2. **Perform the division first**:
\[ 448 \div 16 = 28 \]
Now the equation becomes:
\[ 104 - 21 \times 28 + 1013 = ?^2 \]

3. **Next, perform the multiplication**:
\[ 21 \times 28 = 588 \]
Now the equation updates to:
\[ 104 - 588 + 1013 = ?^2 \]

4. **Now, perform the subtraction and addition**:
\[ 104 - 588 = -484 \]
Then add 1013:
\[ -484 + 1013 = 529 \]
So now we have:
\[ 529 = ?^2 \]

5. **Find the square root**:
\[ ? = \sqrt{529} = 23 \]

Thus, the value that comes in place of the question mark (?) is **23**.

### Final Answer:
The answer is **23** (Option D).