Which two numbers should be interchanged to make the given equation correct?
136 − (176 ÷ 11) × 8 + 22 × 3 = 105
(NOTE: Numbers must be interchanged and not the constituent digits e.g. if 2 and 3 are to be interchanged in the equation 43 × 3 + 4 ÷ 2, then interchanged equation is 43 × 2 + 4 ÷ 3)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1, i.e., 11 and 22.
136 − (176 ÷ 11) × 8 + 22 × 3 = 105
After interchanging numbers,
136 − (176 ÷ 22) × 8 + 11 × 3 = 105
136 - (8 × 8) + 33 = 105
136 - 64 + 33 = 105
169 - 64 = 105
105 = 105