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Evaluate the postfix expression ab + cd/- where a=5, b=4, c=9, d=3.

(a) 23

(b) 15

(c) 6

(d) 10

Question is from Application of Stacks in portion Application of Stacks of Data Structures & Algorithms I

This question was addressed to me by my college director while I was bunking the class.

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Correct choice is (c) 6

The explanation is: The infix expression is (a+b)-c/d. Evaluating it, (5+4)-9/3 gives 6.

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