(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)+(8-4))=10
((3+3)-(4-8))=10
((3+8)+(3-4))=10
((3+8)-(4-3))=10
((3-4)+(3+8))=10
((8+(3+3))-4)=10
((8-4)+(3+3))=10
(3+((3+8)-4))=10
(3+(3+(8-4)))=10
(3+(3-(4-8)))=10
(3+(8+(3-4)))=10
(3+(8-(4-3)))=10
(3-((4-3)-8))=10
(3-((4-8)-3))=10
(3-(4-(3+8)))=10
(8+((3+3)-4))=10
(8+(3+(3-4)))=10
(8+(3-(4-3)))=10
(8-((4-3)-3))=10
(8-(4-(3+3)))=10