【メイク10】2,4,5,7を10にする方法





2,4,5,7と四則演算(+−×÷)を使用して10にする方法を紹介します。これはMake10、切符パズルなどと言います。

(ただし1と2を合せて12のような使い方は出来ません。)

51個の解法が見つかりました。


((2×4)+(7-5))=10

((2×4)-(5-7))=10

((2+(5+7))-4)=10

((2+5)+(7-4))=10

((2+5)-(4-7))=10

((2+7)+(5-4))=10

((2+7)-(4-5))=10

((2-4)+(5+7))=10

((5+(2+7))-4)=10

((5+7)+(2-4))=10

((5+7)-(4-2))=10

((5+7)-(4÷2))=10

((5-4)+(2+7))=10

((7+(2×4))-5)=10

((7+(2+5))-4)=10

((7-4)+(2+5))=10

((7-5)+(2×4))=10

(2+((5+7)-4))=10

(2+(4×(7-5)))=10

(2+(5+(7-4)))=10

(2+(5-(4-7)))=10

(2+(7+(5-4)))=10

(2+(7-(4-5)))=10

(2-((4-5)-7))=10

(2-((4-7)-5))=10

(2-(4×(5-7)))=10

(2-(4-(5+7)))=10

(4+((5+7)÷2))=10

(5+((2+7)-4))=10

(5+(2+(7-4)))=10

(5+(2-(4-7)))=10

(5+(7+(2-4)))=10

(5+(7-(4-2)))=10

(5+(7-(4÷2)))=10

(5-((4-2)-7))=10

(5-((4-7)-2))=10

(5-((4÷2)-7))=10

(5-(4-(2+7)))=10

(5÷(4-(7÷2)))=10

(7+((2×4)-5))=10

(7+((2+5)-4))=10

(7+(2+(5-4)))=10

(7+(2-(4-5)))=10

(7+(5+(2-4)))=10

(7+(5-(4-2)))=10

(7+(5-(4÷2)))=10

(7-((4-2)-5))=10

(7-((4-5)-2))=10

(7-((4÷2)-5))=10

(7-(4-(2+5)))=10

(7-(5-(2×4)))=10



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