MBA Exam

In how many ways can a selection be made of 5 letters out of 5A's,4 B's,3C's,2D's and 1E?

1) 70
2) 71
3) 15C5
4) 15P5
5) None of these

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MBA Other Question

If S =(3,7,11,15.............103) ,and A is a non empty proper subset of
S such that all elements of S are multiple of 3 , find the number of
such unit.please do post explanation as well ...

1) 255
2) 1023
3) 511
4) none of the above
The population of the lost continent Atlantis is 18,000. Atlantis has three cities A, B and C. Every year the entire population of each city moves to the other two cities, half going to one of them and the remaining half going to the other. The current population of A, B and C is 2000, 6000 and 10000 respectively. Then the population of A four years from now will be

1) 5000
2) 6000
3) 5750
4) 5500