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Find the value of the postfix expression given below 8. 3 7 5 2 7 4 7 ? Your answer: O 0 O 16 O 20 O 2 O 6 Find the value of the postfix expression given below 8 3 7 + 5 2 1 4 7 ? Your answer: 0 0 16 20 2 O 6 Find the value of the postfix expression given below 8 3 7 + 5 2 le 4 4 ? Your answer: O 0 O 16 O 20 O -3 O 6 In recursion, the condition for which the function will stop calling itself is Your answer: Base case 0 Worst case O Average case o Best case General case