Question

What will come in the place of ‘?’ in the following equation, if ‘÷’ and ‘–’ are interchanged and ‘×’ and ‘+’ are interchanged? 50 + 72 − 3 ÷ 96 × 36 = ?

• A. 1140
• B. 844
• C. 944
• D. 1336

Answer 1

Answer:

A. 1140

The value that will come in place of ‘?’ is 1140.

1. Interchange the signs as directed:

   • Replace + with ×

   • Replace − with ÷

   • Replace ÷ with −

   • Replace × with +

2. Rewrite the equation with the new signs:
   $50 \times 72 \div 3 - 96 + 36 = ?$

3. Apply the BODMAS / PEMDAS rule (Division first, then Multiplication, Addition, and Subtraction):

   • Division: $72 \div 3 = 24$
     $\rightarrow 50 \times 24 - 96 + 36$

   • Multiplication: $50 \times 24 = 1200$
     $\rightarrow 1200 - 96 + 36$

   • Addition & Subtraction:
     $1200 - 96 + 36 = 1104 + 36 = \mathbf{1140}$