The following postfix expression with single digit operands is evaluated using a stack:
8 2 3 ^ / 2 3 * + 5 1 * -
Note that ^ is the 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: (A)
Explanation: See Question 4 of https://www.geeksforgeeks.org/data-structures-and-algorithms-set-10/amp/
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