The answer will depend on what country you are in, where (in the world) the letter is going and the value of each stamp!
It will depend on the weight. It will require at least two because it is oversized.
9 and 12 are.
Two stamps
To mail a 9 x 12 inch envelope weighing 12 ounces within the United States, you would typically need to use the First-Class Package service. As of October 2023, the cost for a 12-ounce package is around $5.70. Depending on the current postage rates, this usually requires at least two Forever Stamps, which cover up to the first ounce. However, it’s always best to check the latest USPS rates for accurate postage requirements.
im not sure if you can do this in your area but my mail carrier will let me put money in the mailbox adn she puts the correct stamps on there and gives me change
To mail a 9 by 12 envelope within the United States, you typically need two Forever stamps, as the cost for mailing a large envelope (flats) is higher than a standard letter. As of my last update, the rate for a first-class large envelope starts at the price of a single Forever stamp, and additional postage is required for extra weight. Always check the current USPS rates, as they may change.
That all depends on how much is in it. It goes by weight. See the U.S. domestic postage website at the link below. Anyway, it's not about "how many stamps" but "how much postage." Stamps come in denominations from 1 cent on up.
It depends on the weight as it would be processed as "Flat Mail". Visit the Related Link for a chart of the price by oz. from the USPS.
It will depend on the weight. It will require at least two because it is oversized.
9 and 12 are.
Two stamps
The standard size of a passport renewal envelope is 9 inches by 12 inches.
1.22
6.3oz
the USPS charges by weight and not by size
Approximate middle of the front of the outside!
The answer is she has 20 stamps from Europe, 18 stamps from Africa and 9 stamps from Asian. 18+9=27+20=47 47 stamps in all