（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。
((1+(6+8))-5)=10
((1+6)+(8-5))=10
((1+6)-(5-8))=10
((1+8)+(6-5))=10
((1+8)-(5-6))=10
((1-5)+(6+8))=10
((5×(8-6))÷1)=10
((5÷1)×(8-6))=10
((6+(1+8))-5)=10
((6+8)+(1-5))=10
((6+8)-(5-1))=10
((6-5)+(1+8))=10
((8+(1+6))-5)=10
((8-5)+(1+6))=10
((8-6)×(1×5))=10
((8-6)×(5÷1))=10
((8-6)÷(1÷5))=10
(1×(5×(8-6)))=10
(1+((6+8)-5))=10
(1+(6+(8-5)))=10
(1+(6-(5-8)))=10
(1+(8+(6-5)))=10
(1+(8-(5-6)))=10
(1-((5-6)-8))=10
(1-((5-8)-6))=10
(1-(5-(6+8)))=10
(5×((1×8)-6))=10
(5×((8-6)÷1))=10
(5×((8÷1)-6))=10
(5×(1×(8-6)))=10
(5×(8-(1×6)))=10
(5×(8-(6÷1)))=10
(5÷(1÷(8-6)))=10
(6+((1+8)-5))=10
(6+(1+(8-5)))=10
(6+(1-(5-8)))=10
(6+(8+(1-5)))=10
(6+(8-(5-1)))=10
(6-((5-1)-8))=10
(6-((5-8)-1))=10
(6-(5-(1+8)))=10
(6÷((8÷5)-1))=10
(8+((1+6)-5))=10
(8+(1+(6-5)))=10
(8+(1-(5-6)))=10
(8+(6+(1-5)))=10
(8+(6-(5-1)))=10
(8-((5-1)-6))=10
(8-((5-6)-1))=10
(8-(5-(1+6)))=10