Question

If '+' means '−', '−' means '÷', '÷' means '×' and '×' means '+', what will come in place of the question mark (?) in the following equation?

24 − 3 × 12 + 4 ÷ 3 = ?

• A. 11
• B. 8
• C. 10
• D. 12

Answer 1

Answer:

B. 8

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

1. Substitute the signs according to the given conditions:

   • Change '$-$ ' to '$\div$'

   • Change '$\times$' to '$+$'

   • Change '$+$' to '$-$'

   • Change '$\div$' to '$\times$'

   The original equation: $24 - 3 \times 12 + 4 \div 3 = ?$
   The new equation becomes: $24 \div 3 + 12 - 4 \times 3 = ?$

2. Solve using the BODMAS rule:

   • Division first:
     $24 \div 3 = 8$
     Equation becomes: $8 + 12 - 4 \times 3 = ?$

   • Multiplication next:
     $4 \times 3 = 12$
     Equation becomes: $8 + 12 - 12 = ?$

   • Addition and Subtraction:
     $8 + 12 = 20$
     $20 - 12 = 8$