If R denotes “÷”, Q denotes “×”, and P denotes “+”, evaluate: 18 R 9 P 2 Q 8

Introduction / Context:Replace the code letters by the real operations and evaluate using normal precedence rules.

Given Data / Assumptions:

• R→“÷”, Q→“×”, P→“+”.
• Expression: 18 R 9 P 2 Q 8.

Concept / Approach:Perform division and multiplication before addition.

Step-by-Step Solution:18 R 9 → 18 ÷ 9 = 2.2 Q 8 → 2 × 8 = 16.Now P means +: 2 + 16 = 18.

Verification / Alternative check:Direct calculation confirms 18 is correct.

Why Other Options Are Wrong:They arise from doing addition before multiplication or misreading the symbols.

Common Pitfalls:Left-to-right evaluation without respecting precedence.

Final Answer:18.