[eropple]

That wasn't much of a point, on your part. The second question in particular requires some not-entirely-simple breaking down into subproblems. The first one can be handled in such a way if you're unfamiliar with the mathematics behind it; it's easier, as are many things, if you remember combinations and permutations from math class but not at all unsolvable if you don't. His questions aren't bad at demonstrating important aspects of a programmer's problem-solving approach.

And your complaining that "not all jobs require that much expertise" is unfounded. I consider those to be novice questions, personally--and even if they weren't, you don't know what he's hiring for.

He's not being unreasonable. You, on the other hand, seem to be, and seem to be doing so in a rather defensive manner.