Which two signs should be interchanged to make the following equation CORRECT?
[{(15 + 3) - (4 × 2)} (4 - 6)] × 5 = 10
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. + and -.
Given equation: [{(15 + 3) – (4 × 2)} ÷ (4 – 6)] × 5 = 10
After interchange of ‘+’ and ‘–’;
⇒ [{(15 – 3) + (4 × 2) ÷ (4 + 6)}] × 5 = 10
⇒ [{12 + 8} ÷ 10] × 5 = 10 ⇒ [20 ÷ 10] × 5 = 10
⇒ 2 × 5 = 10
⇒ 10 = 10