I think it is C. 5000 = 2^3 * 5^4

(1) y is an integer. Say it is 2^4. 5000/16 and x has a vlaue.

It can also be 3^4 because x has a different value. It is because nothing is said about x-whether real or integer.

(2)Same logic applies here too.

Take 1 and 2 and it is very easy to arrive at y which is 5. Good twist is x is an integer and y is a positive integer. These constraints are necessary because the power of y is even and hence y can be +ve or -ve. Because x's power is odd, sign is reflected in the calculation.

marine wrote:

ds.x^3*y ^4=5000, y =?

1) y is a positive integer

2) x is a integer.

_________________

Awaiting response,

Thnx & Rgds,

Chandra