Question : Directions: If M denotes –, N denotes ÷, O denotes ×, and P denotes +, then what will come in place of (?) in the following equation?
21 O 5 P 69 N 3 P $\sqrt{225}$ M 88 = ?
Option 1: 61
Option 2: 65
Option 3: 55
Option 4: 50
Correct Answer: 55
Solution :
Given:
M denotes –, N denotes ÷, O denotes ×, and P denotes +
21 O 5 P 69 N 3 P $\sqrt{225}$ M 88 = ?
After replacing the letters with the mathematical signs, we get:
= 21 × 5 + 69 ÷ 3 + $\sqrt{225}$ – 88
= 21 × 5 + 69 ÷ 3 + 15 – 88
= 21 × 5 + 23 + 15 – 88
= 105 + 23 + 15 – 88
= 55
So, 55 is the answer to the given equation. Hence, the third option is correct.
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