What is the value of the postfix expression 4 7 1 3 + – *?

Sure, let's solve this postfix expression step by step:

Postfix notation is also known as Reverse Polish Notation (RPN). In this notation, every operator follows all of its operands.

The given postfix expression is: 4 7 1 3 + - *

Step 1: Start from the left, find the first operator. In this case, it's "+". The numbers before "+" are 1 and 3. So, add 1 and 3, we get 4.

Now, replace "1 3 +" with 4. The expression becomes: 4 7 4 - *

Step 2: The next operator is "-". The numbers before "-" are 7 and 4. So, subtract 4 from 7, we get 3.

Now, replace "7 4 -" with 3. The expression becomes: 4 3 *

Step 3: The next operator is "". The numbers before "" are 4 and 3. So, multiply 4 and 3, we get 12.

Now, replace "4 3 *" with 12. The expression becomes: 12

So, the value of the postfix expression "4 7 1 3 + - *" is 12.