Which two numbers should be interchanged to make the following equation correct?
12 × 2 −6 × 7 + 3× 5× 4 + 10 = 46
(Note: Interchange should be done of the 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. 2 and 4.
Given equation: 12 × 2 −6 × 7 + 3× 5× 4 + 10 = 46
On interchanging the two numbers:
12 × 4 −6 × 7 + 3 × 5 × 2 + 10 = 46
48 - 42 + 30 + 10 = 46
88 - 42 = 46
46 = 46