MBA Exam

If x^2 < 625 & |x + 8| < 31, how many values of x are perfect cubes of odd natural numbers?

1) 4
2) 1
3) 2
4) More than 4

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MBA Other Question

There are r rockets placed at the starting point of a track. The speed of each rocket is equal to twice the sum of the speeds of all the preceding rockets. If the 8th rocket covers the track in 3 minutes, then the time which the 6th rocket takes to cover the track is27 minutes. 9 minutes. 3 minutes. 81 minutes

1) a
2) b
3) c
4) d
The no. of positive integers n in the range 12<= n <= 40, for which (n-1)(n-2)(n-3).....3.2.1 is not divisible by n?

1) 28
2) 30
3) 29
4) 7