If n(C)=5, find n(D) and what other relationships exists between sets C and D?

d=6

If n(C)=5, find n(D) and what other relationships exists between sets C and D?
There is not enough information here, but one can come up with different postulates.





For example, let say that n represents a mathematical equation. If you had used n(x) = 5, most would have no problems saying that the function is a horizontal line crossing the y-axis at (0,5). I can just assume that n(C) is the same mathematical equation using C as the variable rather than x. Likewise for n(D). n(x)=n(C)=n(D)=5





Another example would be to consider n as a function that takes a capital alphabetic character and returns an integer. C is the 3rd member of the alphabet and the function returns the 3rd member of the set of odd integers. If the function n is a correlation between the set of alphabetic characters and the set of odd numbers, one could postulate that n(D) = 7.

blazing star