Which two numbers should be interchanged to make the given equation correct?
(24 ÷ 6) + (18 × 4) – 54 + 42 = 99
(Note: Interchange should be done of entire number and not individual digits of a given number)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 24 and 54.
Given equation: (24 ÷ 6) + (18 × 4) – 54 + 42 = 99
On interchanging the signs (24 and 54):
(54 ÷ 6) + (18 × 4) – 24 + 42 = 99
9 + 72 - 24 + 42 = 99
123 - 24 = 99
99 = 99