Question: Postfix notation evaluates expressions without parentheses by scanning operands and operators sequentially. In the expression 1 2 + 3 * , each element

Postfix notation evaluates expressions without parentheses by scanning operands and operators sequentially. In the expression "12+3*", each element is pushed onto a stack. Operators trigger the popping of operands for calculation. Adding 1 and 2 yields 3, then multiplying 3 by 3 gives 9. The final result, 9, remains on the stack after evaluation.

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