If you really want to break it down further the hungry/bored has several questions buot into it:
Am I hungry? Am I bored? Am I both hungry and bored? Am I neither hungry nor bored? Am I hungry but not bored? Am I bored but not hungry?
That kinda gives you 9 questions total, so you could have 88.9 percent of the questions not apply to you, which is close enough to 90.