What is the value of the following postfix expression: 5 2 - 8 4 + *? A) -9 B) 2

Question

What is the value of the following postfix expression: 5 2 - 8 4 + *?
A) -9 B) 28 C) 35 D) 36
What do we call the strategy used for guessing at a solution and backing up when an impasse is reached?
A) backtracking B) impasee resolution C) modified guessing D) back guessing What is the value of the following postfix expression: 5 2 - 8 4 + *?
A) -9 B) 28 C) 35 D) 36
What do we call the strategy used for guessing at a solution and backing up when an impasse is reached?
A) backtracking B) impasee resolution C) modified guessing D) back guessing
A) -9 B) 28 C) 35 D) 36
What do we call the strategy used for guessing at a solution and backing up when an impasse is reached?
A) backtracking B) impasee resolution C) modified guessing D) back guessing

Explanation / Answer

Answer for Question 1:

The real form of expression for given postfix expression is (5 - 2) * ( 8 + 4 ) and the result of this expression is 36, that is option D.

Answer for Question 2:

Option A: Backtracking

Backtracking algorithm incrementally builds candidates to the solutions, and leaves a backtracks as soon as it determines it cannot completed to a valid solution.

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