One if it is the correct amount or greater.
For a first class letter of one ounce, as many as it takes to add up to 98 cents of postage.
How many stamps are needed to send a letter from Texas to Alaska?
700 Stamps
One stamp for a letter.
One normal Canadian stamp (for a letter size and weight)
typicaly 2 stamps
To reach the letter in proper place
if it weighs an ounce or less, three stamps.
How many stamps to STOCKHOLM
one
20