1.

The following postfix expression with single digit operands is evaluated using a stack: 823 ^ / 23 * + 51 - - Note that ^ is exponentiation operator. The top two elements of the stack after the first * is evaluated are:

A. 6, 1
B. 5 , 7
C. 3, 2
D. 1, 5
Answer» B. 5 , 7


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