Question

写二十道用四个数1至10的数用加减乘除或括号等于24

写二十道用四个数1至10的数用加减乘除或括号等于24

Answer 1

(1+2)×(2+6)=24
(3-1)×(5+7)=24
8×9÷(2+1)=24
(3+1)×(3+3)=24
(3+5÷5)×6=24
4×4+7+1=24
4×(5+8-7)=24
(9-5)×(5+1)=24
(6+1-4)×8=24
(1+2)×(1+7)=24

追答

还有
2 7 9 10: ((7-(2-9))+10)=24
2 7 10 10: ((2×(7+10))-10)=24 2 8 8 8: ((2×(8+8))-8)=24
2 8 8 9: ((2-(8-9))×8)=24 2 8 8 10: ((8-(2-8))+10)=24
2 8 9 9: ((2+(9/9))×8)=24 2 8 9 10: ((2×(8+9))-10)=24
2 8 10 10: ((2+(10/10))×8)=24 2 9 10 10: ((9+(10/2))+10)=24
3 3 3 3: ((3×(3×3))-3)=24 3 3 3 4: ((3×(3+4))+3)=24
3 3 3 5: ((3×3)+(3×5))=24 3 3 3 6: ((3×(3+3))+6)=24
3 3 3 7: ((7+(3/3))×3)=24 3 3 3 8: ((3+(3-3))×8)=24
3 3 3 9: ((9-(3/3))×3)=24 3 3 3 10: ((3×(10-3))+3)=24
3 3 4 4: (((3×4)-4)×3)=24 3 3 4 5: ((3×(4+5))-3)=24