Print,

Is usually 300dpi and CMYK.

You can also use 360dpi, 720dpi, 1440dpi and 2880dpi.

As for format, I would recommend EPS or TIFF

if i give resolution more than 300 dpi it's goes to streched
so i confused on resolution

Unless you're printing something with special equipment, or for a special purpose, 300dpi is usually sufficient for almost any use. I find much more really just increases file size, and the image sizing confuses me too. I don't know enough to really explain the hows and whys. But if you google printing resolution dpi explained, you'll find some useful info.