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Philately Ponder (Posted on 2014-11-07) Difficulty: 2 of 5
  • Cade has six red stamps and three blue ones.
  • In his collection, seven stamps are from Argentina and six stamps are from Sweden.
  • One stamp is purple and it is not from Argentina or Sweden.
  • Two of his Argentine stamps are red and one is blue.
  • Two of his Swedish stamps are blue and three are red.
What is the minimum number of stamps that Cade can have?

No Solution Yet Submitted by K Sengupta    
Rating: 2.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution solution | Comment 2 of 3 |
Cade has 7 Argentine stamps: 2 red, 1 blue and 4 others.
Cade has 6 Swedish stamps: 3 red, 2 blue and 1 other.

That accounts for all his blue stamps, but there's also one red stamp that is not from one of these two countries, as well as a purple stamp that's also not from one of these two countries.

That makes 7 Argentine stamps + 6 Swedish + 2 other = 15,

not counting any others he may have, making 15 the minimum.


  Posted by Charlie on 2014-11-07 10:11:36
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