It depends on your country. Postage rules differ by country, so unless you specify which country you are referring to, this cannot be answered.
i believe the most you need is 3.
It depends on the weight It depends on the weight
how many stamps for a 10.4 ounce envelope
It only takes a single stamp. But it does have to be the correct denomination. Currently the rate for a four ounce flat in the US is $1.39. (10/2009)
how many stamps for a 3.4oz envelope
It depends on the weight, destination, country of origin and how it is to be transported.It's a trick question! -Only one if it is the right amount! :)
The amount of stamps needed for an envelope is determined by weight. Weigh your a4 envelope and you will know how much postage is needed.
That depends what denomination of stamps you place on the envelope.
As many as will fit. I have one envelope in my collection with 44 stamps on it! The sender used one cent stamps to mail it. Some people will overlap stamps to get more to fit, which is okay as long as the Post Office can plainly see that they are all there.
It depends on tne weight of the envelope not the size.
2
4