(ただし1と2を合せて12のような使い方は出来ません。)
65個の解法が見つかりました。
(((6+8)÷1)-4)=10
((1×(6+8))-4)=10
((1×6)+(8-4))=10
((1×6)-(4-8))=10
((1×8)+(6-4))=10
((1×8)-(4-6))=10
((1+4)×(8-6))=10
((6×(4-1))-8)=10
((6+(1×8))-4)=10
((6+(8-4))÷1)=10
((6+(8÷1))-4)=10
((6+8)-(1×4))=10
((6+8)-(4÷1))=10
((6-(4-8))÷1)=10
((6-1)×(8÷4))=10
((6-1)÷(4÷8))=10
((6-4)+(1×8))=10
((6-4)+(8÷1))=10
((6÷1)+(8-4))=10
((6÷1)-(4-8))=10
((8×(6-1))÷4)=10
((8+(1×6))-4)=10
((8+(6-4))÷1)=10
((8+(6÷1))-4)=10
((8-(4-6))÷1)=10
((8-4)+(1×6))=10
((8-4)+(6÷1))=10
((8-6)×(1+4))=10
((8÷1)+(6-4))=10
((8÷1)-(4-6))=10
((8÷4)×(6-1))=10
(1×((6+8)-4))=10
(1×(6+(8-4)))=10
(1×(6-(4-8)))=10
(1×(8+(6-4)))=10
(1×(8-(4-6)))=10
(6+((1×8)-4))=10
(6+((8-4)÷1))=10
(6+((8÷1)-4))=10
(6+(1×(8-4)))=10
(6+(8-(1×4)))=10
(6+(8-(4÷1)))=10
(6-((1×4)-8))=10
(6-((4-8)÷1))=10
(6-((4÷1)-8))=10
(6-(1×(4-8)))=10
(6-(4-(1×8)))=10
(6-(4-(8÷1)))=10
(8×((6-1)÷4))=10
(8+((1×6)-4))=10
(8+((6-4)÷1))=10
(8+((6÷1)-4))=10
(8+(1×(6-4)))=10
(8+(6-(1×4)))=10
(8+(6-(4÷1)))=10
(8+(6÷(4-1)))=10
(8-((1×4)-6))=10
(8-((4-6)÷1))=10
(8-((4÷1)-6))=10
(8-(1×(4-6)))=10
(8-(4-(1×6)))=10
(8-(4-(6÷1)))=10
(8-(6÷(1-4)))=10
(8÷(4÷(6-1)))=10