MBA Exam

Exam is divided into 4 sections each containing 45 marks. Passing marks is 90. what are the combinations formed.
plz give the approach to this type of questions.

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MBA Other Question

A bag contains 5 balls and it is not known how many of them are blue in colour. If 2 balls are drawn and found to be blue, then the probability that all the balls in the bag are blue is

1) 1/4
2) 1/2
3) 2/5
4) none of these
Find the maximum value of n at which the expression 7809!/504^n will be an integer.Plz tel the detailed approach.

1) 1949
2) 1746
3) 1299
4) 1088