If 'P' = ×, 'Q' = ÷, 'R' = +, 'S' = -, which equation is correct?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20 Q 5 R 2 P 3 S 1 = 9.
Option 3: 20 Q 5 R 2 P 3 S 1 = 9
On replacing the letters:
20 ÷ 5 + 2 × 3 - 1 = 9
4 + 6 - 1 = 9
10 - 1 = 9
9 = 9