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1. The data structure required to evaluate a postfix expression is
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2. The postfix form of the expression (A+B)∗(C∗D-E)∗F/G is
AB+CD ∗ E−FG/∗∗
AB+CD ∗ E−F∗∗G/
AB+CD ∗ E−∗F∗G/
AB+CDE∗ −∗F∗G/
3. What is the postfix form of the following prefix expression -A/B*C$DE
ABCDE$*/-
A-BCDE$*/-
ABC$ED*/-
A-BCDE$*/
4. The data structure required to check whether an expression contains balanced parenthesis is
Tree
Array
5. The postfix form of A*B+C/D is
*AB/CD+
AB*CD/+
A*BC+/D
ABCD+/ *
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