（ただし１と２を合せて１２のような使い方は出来ません。）
71個の解法が見つかりました。
(((6+9)-5)-0)=10
((0+(6+9))-5)=10
((0+6)+(9-5))=10
((0+6)-(5-9))=10
((0+9)+(6-5))=10
((0+9)-(5-6))=10
((0-5)+(6+9))=10
((6+(0+9))-5)=10
((6+(9-0))-5)=10
((6+(9-5))-0)=10
((6+9)+(0-5))=10
((6+9)-(0+5))=10
((6+9)-(5-0))=10
((6-(0-9))-5)=10
((6-(5-9))-0)=10
((6-0)+(9-5))=10
((6-0)-(5-9))=10
((6-5)+(0+9))=10
((6-5)+(9-0))=10
((6-5)-(0-9))=10
((9+(0+6))-5)=10
((9+(6-0))-5)=10
((9+(6-5))-0)=10
((9-(0-6))-5)=10
((9-(5-6))-0)=10
((9-0)+(6-5))=10
((9-0)-(5-6))=10
((9-5)+(0+6))=10
((9-5)+(6-0))=10
((9-5)-(0-6))=10
(0+((6+9)-5))=10
(0+(6+(9-5)))=10
(0+(6-(5-9)))=10
(0+(9+(6-5)))=10
(0+(9-(5-6)))=10
(0-((5-6)-9))=10
(0-((5-9)-6))=10
(0-(5-(6+9)))=10
(6+((0+9)-5))=10
(6+((9-0)-5))=10
(6+((9-5)-0))=10
(6+(0+(9-5)))=10
(6+(0-(5-9)))=10
(6+(9+(0-5)))=10
(6+(9-(0+5)))=10
(6+(9-(5-0)))=10
(6-((0+5)-9))=10
(6-((5-0)-9))=10
(6-((5-9)-0))=10
(6-(0+(5-9)))=10
(6-(0-(9-5)))=10
(6-(5+(0-9)))=10
(6-(5-(0+9)))=10
(6-(5-(9-0)))=10
(9+((0+6)-5))=10
(9+((6-0)-5))=10
(9+((6-5)-0))=10
(9+(0+(6-5)))=10
(9+(0-(5-6)))=10
(9+(6+(0-5)))=10
(9+(6-(0+5)))=10
(9+(6-(5-0)))=10
(9-((0+5)-6))=10
(9-((5-0)-6))=10
(9-((5-6)-0))=10
(9-(0+(5-6)))=10
(9-(0-(6-5)))=10
(9-(5+(0-6)))=10
(9-(5-(0+6)))=10
(9-(5-(6-0)))=10