What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘÷’ are interchanged and ‘×’ and ‘-’ are interchanged?
20 + 4 ÷ 2 × 3 - 6 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. -11.
Given equation: 20 + 4 ÷ 2 × 3 - 6 = ?
if ‘+’ and ‘÷’ are interchanged, and ‘×’ and ‘-’ are interchanged, then:
(20 ÷ 4) + 2 - 3 × 6 = ?
= 5 + 2 - (3 × 6) = ?
= (5 + 2) - 18 = ?
= 7 - 18 = −11