Which two numbers should be interchanged to make the following equation correct?
(28 × 2) −16 × 6 + 8 × 3 + 5 × 7 = 39
(Note: Interchange should be done of the entire number and not individual digits of a given number.)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 2 and 3.
Given equation: (28 × 2) −16 × 6 + 8 × 3 + 5 × 7 = 39
On interchanging the numbers:
(28 × 3) −16 × 6 + 8 × 2 + 5 × 7 = 39
84 - 96 + 16 + 35 = 39
135 - 96 = 39
39 = 39