MBA Exam

Let a, b, c and d are positive integers such that a^5 = b^4 and c^3 = d^2. If c â€“ a = 19, then determine d â€“ b.

1) 978
2) 720
3) 757
4) 547

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MBA Other Question

there exits a 5 digit number N with distinct and non zero digits such that it equals the sum of all distinct three digit numbers whose digits are all different and are all digits of N. then sum of the digits of N is necessarily:

1) perfect square
2) cube
3) even
4) none of these
(3^1024-1)/2^nFind the highest value of 'n' for which it is divisible.P.s. Please write an explanation if you're correct.

1) 10
2) 11
3) 12
4) 13