MBA Exam

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

Read Solution (Total 0)

MBA Other Question

A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph
in 40 seconds. What is the length of the train in meters?

1) 1777 meters
2) 1822 meters
3) 400 meters
4) 1111 meters
[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