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答えが10になる式126種類
1, 2, 3, 4 → 1+2+3+4=10
1, 2, 3, 5 → 1×2+3+5=10
1, 2, 3, 6 → (1+2÷3)×6=10
1, 2, 3, 7 → (1+7-3)×2=10
1, 2, 3, 8 → (1×2)×(8-3)=10
1, 2, 3, 9 → (1+2)÷3+9=10
1, 2, 4, 5 → 1÷2×4×5=10
1, 2, 4, 6 → (1+6)×2-4=10
1, 2, 4, 7 → 1×2×7-4=10
1, 2, 4, 8 → 1÷2×4+8=10
1, 2, 4, 9 → (1×2)×(9-4)=10
1, 2, 5, 6 → 1+5-2+6=10
1, 2, 5, 7 → 1+2×7-5=10
1, 2, 5, 8 → 1+5+8÷2=10
1, 2, 5, 9 → (1+9)÷2+5=10
1, 2, 6, 7 → 1÷2×6+7=10
1, 2, 6, 8 → (1+2)×6-8=10
1, 2, 6, 9 → 2×(9-1)-6=10
1, 2, 7, 8 → 1+2×8-7=10
1, 2, 7, 9 → (2×9)-(1+7)=10
1, 2, 8, 9 → 1×2×9-8=10
1, 3, 4, 5 → (1+4-3)×5=10
1, 3, 4, 6 → (1+3)×4-6=10
1, 3, 4, 7 → 1+3×(7-4)=10
1, 3, 4, 8 → 1+4-3+8=10
1, 3, 4, 9 → (1+3)÷4+9=10
1, 3, 5, 6 → 1+3×5-6=10
1, 3, 5, 7 → 1+5-3+7=10
1, 3, 5, 8 → 1+3×(8-5)=10
1, 3, 5, 9 → 5-(1+3)+9=10
1, 3, 6, 7 → 1+6÷3+7=10
1, 3, 6, 8 → 1×3×6-8=10
1, 3, 6, 9 → 1+3×6-9=10
1, 3, 7, 8 → (1+8)÷3+7=10
1, 3, 7, 9 → 1÷3×9+7=10
1, 3, 8, 9 → (3-1)×9-8=10
1, 4, 5, 6 → (1×5)×(6-4)=10
1, 4, 5, 7 → (1+4)×(7-5)=10
1, 4, 5, 8 → 1÷4×5×8=10
1, 4, 5, 9 → (1+4)÷5+9=10
1, 4, 6, 7 → 1+6-4+7=10
1, 4, 6, 8 → (1+4)×(8-6)=10
1, 4, 6, 9 → (1+9÷6)×4=10
1, 4, 7, 8 → (1+7)÷4+8=10
1, 4, 7, 9 → (1+4)×(9-7)=10
1, 4, 8, 9 → 8÷4-1+9=10
1, 5, 6, 7 → (1+7-6)×5=10
1, 5, 6, 8 → (1×5)×(8-6)=10
1, 5, 6, 9 → (1+5)÷6+9=10
1, 5, 7, 8 → 1×7-5+8=10
1, 5, 7, 9 → (1×5)×(9-7)=10
1, 5, 8, 9 → (1+9)÷5+8=10
1, 6, 7, 8 → 1+7-6+8=10
1, 6, 7, 9 → (1+6)÷7+9=10
1, 6, 8, 9 → 8-(1+6)+9=10
1, 7, 8, 9 → (1+7)÷8+9=10
2, 3, 4, 5 → (2×3-4)×5=10
2, 3, 4, 6 → (2+3)×(6-4)=10
2, 3, 4, 7 → 2×(3×4-7)=10
2, 3, 4, 8 → (2+3)÷4×8=10
2, 3, 4, 9 → 2+3-4+9=10
2, 3, 5, 6 → 2×(3+5)-6=10
2, 3, 5, 7 → 2+3×5-7=10
2, 3, 5, 8 → (5÷3)×(8-2)=10
2, 3, 5, 9 → (2+3)÷5+9=10
2, 3, 6, 7 → 2×(7-6÷3)=10
2, 3, 6, 8 → 2×(3+6)-8=10
2, 3, 6, 9 → 2×3÷6+9=10
2, 3, 7, 8 → (2÷3)×(7+8)=10
2, 3, 7, 9 → (2+3)×(9-7)=10
2, 3, 8, 9 → 2×8+3-9=10
2, 4, 5, 6 → 2×(4+6-5)=10
2, 4, 5, 7 → 2×4-5+7=10
2, 4, 5, 8 → 2×(4+5)-8=10
2, 4, 5, 9 → 2+4-5+9=10
2, 4, 6, 7 → 2÷4×6+7=10
2, 4, 6, 8 → 2×4-6+8=10
2, 4, 6, 9 → (2+4)÷6+9=10
2, 4, 7, 8 → 2×(4+8-7)=10
2, 4, 7, 9 → 2×4-7+9=10
2, 4, 8, 9 → 2×4÷8+9=10
2, 5, 6, 7 → (2×5)×(7-6)=10
2, 5, 6, 8 → 2+(6-5)×8=10
2, 5, 6, 9 → 2+5-6+9=10
2, 5, 7, 8 → (2×5)×(8-7)=10
2, 5, 7, 9 → (2+5)÷7+9=10
2, 5, 8, 9 → (2×5)×(9-8)=10
2, 6, 7, 8 → 2×(6+7-8)=10
2, 6, 7, 9 → 2+6-7+9=10
2, 6, 8, 9 → (2+6)÷8+9=10
2, 7, 8, 9 → 2+7-8+9=10
3, 4, 5, 6 → 3×4×5÷6=10
3, 4, 5, 7 → 3×4+5-7=10
3, 4, 5, 8 → 3+4-5+8=10
3, 4, 5, 9 → 3×5+4-9=10
3, 4, 6, 7 → (4-7÷3)×6=10
3, 4, 6, 8 → 3×4+6-8=10
3, 4, 6, 9 → 3+4-6+9=10
3, 4, 7, 8 → (3-7÷4)×8=10
3, 4, 7, 9 → (3+4)÷7+9=10
3, 4, 8, 9 → 3-8÷4+9=10
3, 5, 6, 7 → 3+(6-5)×7=10
3, 5, 6, 8 → 3+5-6+8=10
3, 5, 6, 9 → 3×5×6÷9=10
3, 5, 7, 8 → (3+7)÷5+8=10
3, 5, 7, 9 → 3+5-7+9=10
3, 5, 8, 9 → (3+5)÷8+9=10
3, 6, 7, 8 → 3+6-7+8=10
3, 6, 7, 9 → 6+7-9÷3=10
3, 6, 8, 9 → 3+6-8+9=10
3, 7, 8, 9 → (3+7)×(9-8)=10
4, 5, 6, 7 → 4+5-6+7=10
4, 5, 6, 8 → (4×5)÷(8-6)=10
4, 5, 6, 9 → (4×6)-(5+9)=10
4, 5, 7, 8 → 4+5-7+8=10
4, 5, 7, 9 → (4×5)÷(9-7)=10
4, 5, 8, 9 → 4+5-8+9=10
4, 6, 7, 8 → (4÷6)×(7+8)=10
4, 6, 7, 9 → 6+(7+9)÷4=10
4, 6, 8, 9 → (4+6)×(9-8)=10
4, 7, 8, 9 → 4+7+8-9=10
5, 6, 7, 8 → 5+6+7-8=10
5, 6, 7, 9 → (6+9)÷5+7=10
5, 6, 8, 9 → 5+6+8-9=10
5, 7, 8, 9 → 5×(7+9)÷8=10
6, 7, 8, 9 → 6×(7+8)÷9=10
全 126種類