(ただし1と2を合せて12のような使い方は出来ません。)
40個の解法が見つかりました。
(((7+7)-4)-0)=10
((0+(7+7))-4)=10
((0+7)+(7-4))=10
((0+7)-(4-7))=10
((0-4)+(7+7))=10
((7+(0+7))-4)=10
((7+(7-0))-4)=10
((7+(7-4))-0)=10
((7+7)+(0-4))=10
((7+7)-(0+4))=10
((7+7)-(4-0))=10
((7-(0-7))-4)=10
((7-(4-7))-0)=10
((7-0)+(7-4))=10
((7-0)-(4-7))=10
((7-4)+(0+7))=10
((7-4)+(7-0))=10
((7-4)-(0-7))=10
(0+((7+7)-4))=10
(0+(7+(7-4)))=10
(0+(7-(4-7)))=10
(0-((4-7)-7))=10
(0-(4-(7+7)))=10
(7+((0+7)-4))=10
(7+((7-0)-4))=10
(7+((7-4)-0))=10
(7+(0+(7-4)))=10
(7+(0-(4-7)))=10
(7+(7+(0-4)))=10
(7+(7-(0+4)))=10
(7+(7-(4-0)))=10
(7-((0+4)-7))=10
(7-((4-0)-7))=10
(7-((4-7)-0))=10
(7-(0+(4-7)))=10
(7-(0-(7-4)))=10
(7-(4+(0-7)))=10
(7-(4-(0+7)))=10
(7-(4-(7-0)))=10