(ただし1と2を合せて12のような使い方は出来ません。)
22個の解法が見つかりました。
((3+3)+(5-1))=10
((3+3)-(1-5))=10
((3+5)+(3-1))=10
((3+5)-(1-3))=10
((3-1)+(3+5))=10
((5+(3+3))-1)=10
((5-1)+(3+3))=10
(3+((3+5)-1))=10
(3+(3+(5-1)))=10
(3+(3-(1-5)))=10
(3+(5+(3-1)))=10
(3+(5-(1-3)))=10
(3-((1-3)-5))=10
(3-((1-5)-3))=10
(3-(1-(3+5)))=10
(5×(1+(3÷3)))=10
(5+((3+3)-1))=10
(5+(3+(3-1)))=10
(5+(3-(1-3)))=10
(5-((1-3)-3))=10
(5-(1-(3+3)))=10