What approximate value will come in place of question mark (?) in the following questions ?
`169.98 + 64.99 xx 1.998 - 49.86 = ?`

Options

A. 250
B. 300
C. 200
D. 150

Answer

To solve the expression \( 169.98 + 64.99 \times 1.998 - 49.86 \), we will first round the numbers to make the calculations easier.

### Step 1: Round the numbers
- Round \( 169.98 \) to \( 170 \)
- Round \( 64.99 \) to \( 65 \)
- Round \( 1.998 \) to \( 2 \)
- Round \( 49.86 \) to \( 50 \)

### Step 2: Substitute the rounded values into the expression
Now, the expression becomes:
\[ 170 + 65 \times 2 - 50 \]

### Step 3: Perform the multiplication
Calculate \( 65 \times 2 \):
\[ 65 \times 2 = 130 \]

### Step 4: Substitute back into the expression
Now, the expression is:
\[ 170 + 130 - 50 \]

### Step 5: Perform the addition and subtraction
First, add \( 170 + 130 \):
\[ 170 + 130 = 300 \]
Then subtract \( 50 \):
\[ 300 - 50 = 250 \]

### Final Answer
Thus, the approximate value that will come in place of the question mark (?) is:
\[ \boxed{250} \]