On dis earth how many comets appear that can be seen thrgh naked eye in 1 year?

[kunj]

i saw 1 jus 4 1/2 hours ago....

[Ariespears]

i saw 142 in 1hour at birds hill

[Michael Steen]

I think Ariespears meant meteors, not comets.
There's no way, really, to answer the question kunj asks. Short period comets like Halley's come around on predictable orbits, though these orbits are still very long--Halley's has a period of 77 years. Some are even longer.
Long period comets have orbits of longer than 200 years, so when they do appear it's a surprise, as no one in recorded history has seen it before, or at least plotted it.
However, to get back to the original question: It's not how many naked eye comets appear per year; it's how many years pass before a naked eye comet does show up. They're fairly rare, and I wouldn't expect you'd see one more frequently than once every five to ten years.
Binocular or telescope comets, OTOH, show up a little more frequently.

[Carlos_dfc]

There are NO naked-eye comets visible at the moment

I think Kunj is also talking about meteors