Brain Teasers
Postage Possibilities
Cory's family is sending family photographs with letters to friends, and the weight of each envelope will require 55 cents postage. They have a selection of the following different stamps from which to choose:
52-cent Hubert H. Humphrey stamp
32-cent flag stamp
23-cent Mary Cassatt stamp
20-cent bird stamp
15-cent Buffalo Bill Cody stamp
3-cent bird stamp
Cory wants each envelope to have exactly 55 cents in postage, and to have a different combination of stamps.
What are the different stamp combinations Cory can use on the envelopes, if he has room for no more than 5 stamps on an envelope?
52-cent Hubert H. Humphrey stamp
32-cent flag stamp
23-cent Mary Cassatt stamp
20-cent bird stamp
15-cent Buffalo Bill Cody stamp
3-cent bird stamp
Cory wants each envelope to have exactly 55 cents in postage, and to have a different combination of stamps.
What are the different stamp combinations Cory can use on the envelopes, if he has room for no more than 5 stamps on an envelope?
Answer
A 32-cent flag stamp, a 20-cent bird stamp, and a 3-cent bird stampA 32-cent flag stamp and a 23-cent Mary Cassatt stamp
A 52-cent Hubert H. Humphrey stamp and a 3-cent bird stamp
Two 20-cent bird stamps and a 15-cent Buffalo Bill Cody stamp
Two 23-cent Mary Cassatt stamps and three 3-cent bird stamps
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