MBA Exam

Abiologist catches a random sample of 60 fish from a lake, tags them andreleases them. Six months later she catches a random sample of 70 fishand finds 3 are tagged. She assumes 25% of the fish in the lake on theearlier date have died or moved away and that 40% of the fish on thelater date have arrived (or been born) since. What does she estimate asthe number of fish in the lake on the earlier date?

1) 420
2) 560
3) 630
4) 720
5) 840

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MBA Other Question
A person ‘A’ is standing in the middle of a platform of length 300 m. Two trains ‘B’ and ‘C’ of length 120 m and 250 m running with a speeds of 54 kmph and 72 kmph respectively, enter the platform from opposite ends at the same time (on parallel tracks). How much of the length of train ‘C’ does the person see while it passes him, if train ‘B’ comes in between him and train ‘C’ to block his view? 1. 502. 403. 904. 80

1) 1
2) 2
3) 3
4) 4
 From a deck of 52 cards, two cards are drawn at random without replacement. If one card is further drawn from the pack, what is the probability that it will be a Queen?

1) 1/4
2) 1/13
3) 1/26
4) 1/17