The Philatelist


My sister has six red stamps and three blue ones. In her collection, seven stamps are from Mexico and six stamps are from France. One stamp is purple and it is not from Mexico or France. Two of her Mexican stamps are red and one is blue. Two of her French stamps are blue and three are red. How many stamps does she have?

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    She has a minimum of 15 stamps.
    Mexico: 1 blue, 2 red, 4 unknown color
    France: 2 blue, 3 red, 1 unknown color
    Unknown country: 1 purple, 1 red

    anikam Expert Answered on 18th August 2015.
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