（ただし１と２を合せて１２のような使い方は出来ません。）
54個の解法が見つかりました。
(((3×4)÷1)-2)=10
((1×(3×4))-2)=10
((1×4)+(2×3))=10
((1+2)+(3+4))=10
((1+3)+(2+4))=10
((1+4)+(2+3))=10
((2×3)+(1×4))=10
((2×3)+(4÷1))=10
((2×4)+(3-1))=10
((2×4)-(1-3))=10
((2+3)+(1+4))=10
((2+4)+(1+3))=10
((3×(1×4))-2)=10
((3×(4÷1))-2)=10
((3×4)-(1×2))=10
((3×4)-(2÷1))=10
((3+(2×4))-1)=10
((3+4)+(1+2))=10
((3-1)+(2×4))=10
((3÷(1÷4))-2)=10
((4×(1×3))-2)=10
((4×(3÷1))-2)=10
((4+(2×3))÷1)=10
((4÷(1÷3))-2)=10
((4÷1)+(2×3))=10
(1×((3×4)-2))=10
(1×(4+(2×3)))=10
(1+(2+(3+4)))=10
(1+(3+(2+4)))=10
(1+(4+(2+3)))=10
(2+(1+(3+4)))=10
(2+(3+(1+4)))=10
(2+(4×(3-1)))=10
(2+(4+(1+3)))=10
(2-(4×(1-3)))=10
(3+((2×4)-1))=10
(3+(1+(2+4)))=10
(3+(2+(1+4)))=10
(3+(4+(1+2)))=10
(3-(1-(2×4)))=10
(4×(1+(3÷2)))=10
(4×(3-(1÷2)))=10
(4+((2×3)÷1))=10
(4+(1×(2×3)))=10
(4+(1+(2+3)))=10
(4+(2×(1×3)))=10
(4+(2×(3÷1)))=10
(4+(2+(1+3)))=10
(4+(2÷(1÷3)))=10
(4+(3×(1×2)))=10
(4+(3×(2÷1)))=10
(4+(3+(1+2)))=10
(4+(3÷(1÷2)))=10