MBA Exam

If xxyy is a perfect square, then x+y = ?

1) 9
2) 10
3) 11
4) 12

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MBA Other Question
If T1 = 1 , and Tn = Tn-1+ 1/Tn-1 , find T75

1) 9-12
2) 12-15
3) 15-18
4) None of the above
 How many positive integers ‘n’ less than 17 are there for which n! + (n+1)! + (n+2)! is an integral multiple of 49?

1) 0
2) 1
3) 3
4) 5