Question

What will come in the place of the question mark (?) in the following equation, if '+' and '÷' are interchanged and '-' and 'x' are interchanged? 16 - 2 × 104 + 4 ÷ 20 =?

• A. 29
• B. 37
• C. 26
• D. 33

Answer 1

Answer:

C. 26

Given expression:

$16 - 2 \times 104 + 4 \div 20$

• ‘+’ ↔ ‘÷’

• ‘−’ ↔ ‘×’

So the new operators become:

• ‘−’ becomes ‘×’

• ‘×’ becomes ‘−’

• ‘+’ becomes ‘÷’

• ‘÷’ becomes ‘+’

$16 \times 2 - 104 \div 4 + 20$

1. Division:
   $104 \div 4 = 26$

2. Multiplication:
   $16 \times 2 = 32$

Now substitute:
$32 - 26 + 20$

3. Addition and subtraction:
   $32 - 26 = 6$
   $6 + 20 = 26$