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Que. How many PUSH and POP operations will be needed to evaluate the following expression by reverse polish notation in a stack machine (A * B) + (C * D/E)?
a. 4 PUSH and 3 POP instructions
b. 5 PUSH and 4 POP instructions
c. 6 PUSH and 2 POP instructions
d. 5 PUSH and 3 POP instructions
Answer:5 PUSH and 4 POP instructions
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