Regular postage works to an APO or SPO address. Non-military, I don't know.
Lots.
a regular 44 cent stamp is all u need!
you need 3 stamps
sometimes 2 if its big if letter then one
Just one.... you can put 2 just to make sure that it gets there. That is if its just a letter
If this is just a post card you will only need the one stamp to mail it within the US.
That will depend on the value of the stamps you have. If you have one cent stamps you will need 190 of them. If you have ten cent stamps you only need 19.
it depends on the stamp then you will know how many stamps you will need
3 stamps!
what the price to mail letter to
you need ten stamps actually i don't know
4 stamps