Question

The value of the postfix notation 25*3-42/ *​

Answer 1

Step-by-step explanation:

What the above expression can be represented as:

Bracket is not implied by given expression but I've used to it to tell you how this expression will look like when converted to Infix express.

6 3 (2+4) - *

6 (3 - (2+4)) *

6 * (3 - (2+4))

Infix expression of given Postfix expression:

6 * (3 - (2+4))

6*(3–6)

6*(-3)

-18

Hence the Postfix expression evaluates to: (-18)

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Answer 2

Given : 2 , 5 , * , 3 , - , 4 , 2 , / ,  *

To Find : The value of the postfix notation

Solution:

operator need to be applied between top two elements in stacks (  right side 2 elements )  here below :

Scanned         Stack

2                        2

5                       2 , 5

*                        10          (2 * 5 = 10)

3                       10 , 3

-                        7            (10 - 3 = 7)

4                      7 , 4

2                      7 , 4 , 2

/                       7 , 2       ( 4 /2  = 2)

*                       14           (7 * 2 = 14)

Hence the Value of postfix notation 2 , 5 , * , 3 , - , 4 , 2 , / ,  *

is 14