What will come in place of question mark (?) in the following questions ?
`39.86 - 14.21 - 3.83 + 0.78 = ?`

Options

A. 22.6
B. 23.6
C. 21.8
D. 19.6

Answer

To solve the equation \( 39.86 - 14.21 - 3.83 + 0.78 = ? \), we will follow these steps:

### Step 1: Perform the first subtraction
Start with the first two numbers:
\[ 39.86 - 14.21 \]
Calculating this gives:
\[ 39.86 - 14.21 = 25.65 \]

**Hint:** Always start by performing operations from left to right, especially with addition and subtraction.

### Step 2: Perform the second subtraction
Now, take the result from Step 1 and subtract the next number:
\[ 25.65 - 3.83 \]
Calculating this gives:
\[ 25.65 - 3.83 = 21.82 \]

**Hint:** Keep track of your decimal points and align them properly for accurate subtraction.

### Step 3: Perform the addition
Now, take the result from Step 2 and add the last number:
\[ 21.82 + 0.78 \]
Calculating this gives:
\[ 21.82 + 0.78 = 22.60 \]

**Hint:** When adding decimals, ensure that the decimal points are aligned to avoid mistakes.

### Final Answer
Thus, the value that comes in place of the question mark (?) is:
\[ \boxed{22.60} \]