Officer's trick, indeed. They're both unanswerable questions; or rather, questions with many possible answers, depending on the context. how big is an angel? How big is the head of the pin? What kind of dancing? It's unknowable, or unguessable. So is the question about the knives. Given that two of the three (the French knife and the khukuri) are good carbon steel, I would guess that with effort, these three knives can be made equally sharp; but they have different purposes, and aren't really comparable. The Italian stiletto is for stabbing; the French carbon knife is a bit better for slashing or slicing than for stabbing, though it can do both, and the Khukuri, with its heavier, angled blade, is perfect for chopping, or as the Ghorkas found in the trenches, slashing upward from groin to rib cage or down from neck to opposite shoulder. It's a bit less good for jabbing. If this was a question of preference - such as, which of these three blades would you prefer? -, I'd take the khukuri, because an expert with it can use different parts of the blade for different purposes. It's a good all-purpose knife that is excellent in combat; the others are fighting knives with very specific purposes and more severe limitations. The khuk excells at more applications, but it isn't necessarily sharper.
how'd I do?
Frostdog