What will come in place of question mark (?) in the following questions
`3845 + 4380 + 2640 - 5965 = (?)^(2)`

Options

A. 75
B. 60
C. 80
D. 70

Answer

To solve the equation \( 3845 + 4380 + 2640 - 5965 = (?)^2 \), we will follow these steps:

### Step 1: Add the positive numbers
First, we will add the numbers \( 3845 \), \( 4380 \), and \( 2640 \).

\[ 3845 + 4380 + 2640 \]

Calculating this step-by-step:

1. \( 3845 + 4380 = 8225 \)
2. \( 8225 + 2640 = 10865 \)

So, the sum of the positive numbers is \( 10865 \).

### Step 2: Subtract the negative number
Next, we will subtract \( 5965 \) from \( 10865 \).

\[ 10865 - 5965 \]

Calculating this:

\[ 10865 - 5965 = 4900 \]

### Step 3: Set the equation
Now we have:

\[ 4900 = (?)^2 \]

### Step 4: Solve for the question mark
To find \( ? \), we take the square root of \( 4900 \):

\[ ? = \sqrt{4900} \]

Calculating the square root:

\[ \sqrt{4900} = 70 \]

### Final Answer
Thus, the value that comes in place of the question mark is \( 70 \).

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