In each question, what will come in place of question mark?
`sqrt ? + 720 div 12 = 8 xx 10 – 16`

Options

A. 4
B. 12
C. 16
D. None of these

Answer

To solve the equation \( \sqrt{?} + \frac{720}{12} = 8 \times 10 - 16 \), we will follow these steps:

### Step 1: Simplify the division
First, we simplify \( \frac{720}{12} \):
\[ \frac{720}{12} = 60 \]
So, the equation now becomes:
\[ \sqrt{?} + 60 = 8 \times 10 - 16 \]

### Step 2: Calculate the multiplication and subtraction
Next, we calculate \( 8 \times 10 \):
\[ 8 \times 10 = 80 \]
Now, substitute this back into the equation:
\[ \sqrt{?} + 60 = 80 - 16 \]

### Step 3: Simplify the right side
Now, simplify \( 80 - 16 \):
\[ 80 - 16 = 64 \]
So, the equation now is:
\[ \sqrt{?} + 60 = 64 \]

### Step 4: Isolate the square root
To isolate \( \sqrt{?} \), we subtract 60 from both sides:
\[ \sqrt{?} = 64 - 60 \]
\[ \sqrt{?} = 4 \]

### Step 5: Square both sides
Now, we square both sides to solve for \( ? \):
\[ ? = 4^2 \]
\[ ? = 16 \]

Thus, the value that comes in place of the question mark is \( 16 \).

### Final Answer:
The value of the question mark is \( 16 \).

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