Question

What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘−’ are interchanged and also ‘×’ and ‘÷’ are interchanged?

10 + 152 × 19 − 2 ÷ 3 = ?

• A. 4
• B. 2
• C. 6
• D. 8

Answer 1

Answer:

D. 8

The value that will come in place of the question mark is 8.

1. Interchange the signs according to the given rules:

   • Interchange + and − (swap their positions)

   • Interchange × and ÷ (swap their positions)

   The original equation:
   $10 + 152 \times 19 - 2 \div 3 = ?$The new equation after interchanging becomes:
   $10 - 152 \div 19 + 2 \times 3 = ?$

2. Solve using the BODMAS rule:

   • Division first:
     $152 \div 19 = 8$
     Equation becomes: $10 - 8 + 2 \times 3 = ?$

   • Multiplication next:
     $2 \times 3 = 6$
     Equation becomes: $10 - 8 + 6 = ?$

   • Addition and Subtraction (left to right):
     $10 - 8 = 2$
     $2 + 6 = 8$