(ただし1と2を合せて12のような使い方は出来ません。)
21個の解法が見つかりました。
((3×3)-(4-5))=10
((3×4)+(3-5))=10
((3×4)-(5-3))=10
((3+(3×4))-5)=10
((3-5)+(3×4))=10
((3÷3)+(4+5))=10
((4+5)+(3÷3))=10
((5+(3×3))-4)=10
((5-4)+(3×3))=10
(3+((3×4)-5))=10
(3-(5-(3×4)))=10
(4+(3×(5-3)))=10
(4+(5+(3÷3)))=10
(4-(3×(3-5)))=10
(5×((3+3)-4))=10
(5×(3+(3-4)))=10
(5×(3-(4-3)))=10
(5+((3×3)-4))=10
(5+(4+(3÷3)))=10
(5-(4-(3×3)))=10