Answer:
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
who do you think you know but sometimes you don't
What goes up but never comes down?
There is someone, and there is always another, for without the other, there wouldn't be one
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?