（ただし１と２を合せて１２のような使い方は出来ません。）
74個の解法が見つかりました。
((2×(2×4))-6)=10
((2×(4+6))÷2)=10
((2×6)+(2-4))=10
((2×6)-(4-2))=10
((2×6)-(4÷2))=10
((2+(2×6))-4)=10
((2+(4+6))-2)=10
((2+4)+(6-2))=10
((2+4)-(2-6))=10
((2+6)+(4-2))=10
((2+6)+(4÷2))=10
((2+6)-(2-4))=10
((2-2)+(4+6))=10
((2-4)+(2×6))=10
((2÷2)×(4+6))=10
((4×(2×2))-6)=10
((4×(2+2))-6)=10
((4×(6÷2))-2)=10
((4+(2+6))-2)=10
((4+6)×(2÷2))=10
((4+6)+(2-2))=10
((4+6)-(2-2))=10
((4+6)÷(2÷2))=10
((4-2)+(2+6))=10
((4÷(2÷6))-2)=10
((4÷2)+(2+6))=10
((6×(4-2))-2)=10
((6×(4÷2))-2)=10
((6+(2+4))-2)=10
((6-2)+(2+4))=10
((6÷(2÷4))-2)=10
(2×((4+6)÷2))=10
(2+((2×6)-4))=10
(2+((4+6)-2))=10
(2+(4+(6-2)))=10
(2+(4-(2-6)))=10
(2+(6+(4-2)))=10
(2+(6+(4÷2)))=10
(2+(6-(2-4)))=10
(2-((2-4)-6))=10
(2-((2-6)-4))=10
(2-(2-(4+6)))=10
(2-(4-(2×6)))=10
(2÷(2÷(4+6)))=10
(4+((2×6)÷2))=10
(4+((2+6)-2))=10
(4+(2×(6÷2)))=10
(4+(2+(6-2)))=10
(4+(2-(2-6)))=10
(4+(2÷(2÷6)))=10
(4+(6×(2÷2)))=10
(4+(6+(2-2)))=10
(4+(6-(2-2)))=10
(4+(6÷(2÷2)))=10
(4-((2-2)-6))=10
(4-((2-6)-2))=10
(4-(2-(2+6)))=10
(6+((2×4)÷2))=10
(6+((2+4)-2))=10
(6+(2×(4-2)))=10
(6+(2×(4÷2)))=10
(6+(2+(4-2)))=10
(6+(2+(4÷2)))=10
(6+(2-(2-4)))=10
(6+(2÷(2÷4)))=10
(6+(4×(2÷2)))=10
(6+(4+(2-2)))=10
(6+(4-(2-2)))=10
(6+(4÷(2÷2)))=10
(6-((2-2)-4))=10
(6-((2-4)-2))=10
(6-(2×(2-4)))=10
(6-(2-(2+4)))=10