MBA Exam

If n is an odd natural number, what is the highest number that always divides n(n^2-1) ?

1) 6
2) 8
3) 12
4) 24

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MBA Other Question

Three whole numbers are taken at random and multiplied. What is the probability that the units digits of the product is any of the 1,3, 7 or 9??Post d approach!!

1) 2/5
2) 3/25
3) 8/125
4) 5/9
If f(x) = ax2 + bx + c, f(2) >-2, f(-2) <2 and f(5) <-6, then the sign of 'a' is

1) positive
2) negative
3) either positive or negative.
4) None of these