MBA Exam

[ (81!+91!)^2-(81!-91!)^2]/81!*91!.......simplify it?

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

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MBA Other Question

A small "mom and pop" diner serves three different main items at
lunch, eight different side items and six different desserts. Determine
how many different plate of lunches could be served if each each lunch has
one main item, two different side items and one dessert.Enjoy Maaddi!!!!!

1) 510
2) 505
3) 504
4) 550
The number of roots of the equation x + | x2 - 1 | = k, where k is a real constant is/are

1) 4 for k = 6/5
2) 3 for k = 5/4
3) 2 for -1 < k < 1
4) All of these