The equation "Who asked" is typically posed as an ironic question, usually implying that nobody asked. Thus, one could say an imaginary person asked.

In this case, the following is true;

(Who asked?) = Imaginary

Now, one thing we know is that the square root of -1 is also imaginary. Thus, it can be reasonably concluded that;

(Who asked?) = √-1, which is typically considered to be the variable "i." Therefore;

(Who asked?) = i

In conclusion, the answer to your proposed equation is "i asked." I hope this was a satisfactory answer, have a blessed day.