Question

Question 9.Calculate the result of the following prefix expression: +, -, *, 8, 4, 7, 6, 2,5Answer:​

Answer 1

Answer:

3004.95798704 this is your answer

Answer 2

31 is the result of the given prefix expression i.e. +, -, *, 8, 4, 7, 6, 2, 5.

Explanation:

• Given prefix expression is +, -, *, 8, 4, 7, 6, 2, 5

• Evaluation will be started from the end

• First, 5 will get pushed in the stack

• Then 2, 6, 7, 4, 8 will get pushed into the stack in order one above another respectively

• Then * operation will get turn and pop on top 2 numbers which are 8 and 4 which will result in 8 * 4 = 32 and will get pushed to the top of the stack.

• Then - the operation will get turn and pop on top 2 numbers which are 12 and 7 which will result in 32 - 7 = 25 and will get pushed to the top of the stack.

• Lastly + operation will get a turn and pop on top 2 numbers which are 25 and 6 which will result in 25 + 6 = 31 and will get pushed to the top of stack.

• Now as the expression is finished the top element which is 31 will get shown as output.

Hence, 31 is the result of the given prefix expression i.e. +, -, *, 8, 4, 7, 6, 2, 5.