Question:
What is the postfix expression of $P + Q / R * (S - P)$?
What is the postfix expression of $P + Q / R * (S - P)$?
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Postfix expressions evaluate left-to-right; write operands first, then operators.
Updated On: Jun 17, 2025
- PQRSP/-*+
- +P/Q*R-SP
- PQRSP/-*+
- **-/PQRSP
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The Correct Option is A
Solution and Explanation
Given infix expression: \(P + \frac{Q}{R} \times (S - P)\)
First convert to postfix:
- \(Q / R \rightarrow QR/\)
- \(S - P \rightarrow SP-\)
- Then \(QR/ \times SP- \rightarrow QR/SP/-*\)
- Finally add P: \(P QR SP/- * +\)
First convert to postfix:
- \(Q / R \rightarrow QR/\)
- \(S - P \rightarrow SP-\)
- Then \(QR/ \times SP- \rightarrow QR/SP/-*\)
- Finally add P: \(P QR SP/- * +\)
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