## Discussion Forum

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 |