This depends on where (which country) you are sending your mail from.
Yes
4 stamps
you need ten stamps actually i don't know
what the price to mail letter to
maybe 2 0r 3 stamps
Stamps show that you have paid the money to have the letter delivered.
it depends on the stamp then you will know how many stamps you will need
45 cents worth of stamps for one ounce of mail or one Forever Stamp.
how many first class stamps does it take to mail a 4 oz letter and package
dat depends if it is e mail or post mail
one. number of stamps is determined by weight, not distance
That would depend on where in the world you were posting from and what denomination of stamps you were using.