MBA Exam

the metro service has a train going from Mumbai to Pune and Pune to Mumbai every hour, the first one at 6 a.m. The trip from 1 city to another takes 4 1/2 hrs, and all trains travel at same speed. how many trains will you pass while going from Mumbai to Pune if you start at 12 noon?

1) 8
2) 9
3) 13
4) 10

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MBA Other Question

There are 10 boxes,numbered 1 to 10,each containing g gold coins,each of the coins in nine of these tenth boxes weights 10 gm, where as each of the coins in the tenth boxes weighs 20 gm.A digital weighting machine is provided. Now a logician, Mr Kapil is invited.The task for him is that he has to find out the box consisting of the coins of 20 gm each. Finally, the logician has to ensure that he finds the box.If the number of gold coins in each box is 9, then what is the minimum possible number of times for which the weighing is to be used? (please help me out to solve this question and do post the method also.)

1) 1
2) 2
3) 3
4) 4
What is the Last 3 Digit of the number (902)^12?

1) 096
2) 496
3) 048
4) 448