MBA Exam

a shipping clerk has five boxes having different weights.The clerk weighed the boxes in pairs and obtained the weights as 62,66,67,68,69,70,72,73,76,77.weight of the lightest box?

1) 28
2) 29
3) 32
4) 30

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MBA Other Question
Find the total no of even factors of the product of first three even perfect no?Please share approach.....

1) 28
2) 56
3) 64
4) 72
 Suppose that we label each of the 8 cards with +1 on one side and –1 on the other. The cards are randomly scrambled onto a table so that either side of each card is equally likely to be facing up. Let x be the absolute value of the sum of the numbers that are facing up. The most likely value of x is

1) 0
2) 2
3) 4
4) 6