If it just a letter, just one is fine no matter where you send it from and where the ending destination is located. But I think it cannot exceed a certain weight. If you are concerned about it put two stamps on the envelope and mail it out.
3 stamps!
you need ten stamps actually i don't know
one
41
probally just 1 or 2 42 cent stamps
4
$1.32
what the price to mail letter to
3
you would only need one stamp
3 stamps!
You would only need one stamp to mail your letter
About one liberty stamp :)
you need ten stamps actually i don't know
At that weight, it would be classified as a large envelope, and postage would be $2.20 as of 2016.
maybe 2 0r 3 stamps
3 stamps.