What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘–‘ are interchanged and ‘×’ and ‘÷’ are interchanged?
5 – 4 ÷ 9 + 80 × 10 = ?
Option
a) 31
b) 33
c) 35
d) 30
Solution
By interchanging ‘+’ with ‘–‘ and ‘×’ with ‘÷’
5 – 4 ÷ 9 + 80 × 10 = ?
5 + 36 – 8
41 – 8 = 33
Correct Answer : b) 33