MBA Exam

[x] is greatest integer less than or equal to x, then find the value of the follwoing expression:-[2008/1] - [2007/1] + [2008/2] - [2007/2] + [2008/3] - [2007/3] + .. + [2008/2008] - [2007/2008]

1) 8
2) 9
3) 10
4) NOT

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MBA Other Question

Is there any Trick or Formula to check whether a number is perfect square or not.(not by calculating all prime factors or general division method) I want one_line solution/oral approach/Formula.plz post the solution.

1) Nahi pata :(
2) I know and i'm writing the solution
PQR is a right angled triangle. S, T and V represent the points of contact, of the incircle of the triangle PQR on side PQ, QR and RP respectively, with the sides of the triangle. PS : SQ and RT : TQ are integers (PS : SQ) + (RT : TQ) =

1) 3
2) 4
3) 5
4) 6