QUESTION 31 Evaluate the following postfix expression: 2 2 2 2 2 2 2 2 2 2 + + + + + + + + QUESTION 32 balanced: ((xx[{{"> ]XX)) The following expression True O False QUESTION 33 Odlogan) is called time QUESTION 34 This structure is the best model for a group of customers waiting to check out in a grocery store. o Array o Map Stack Queue QUESTION 35 In the best case, a sequential search of an array with 1,000 elements requires how many comparisons