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用3.6.7.9.這四個數算24點，有幾種方法？

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  • 1 # Ming明00001

    3*(6-(7-9)) = 24

    3-(6-9)*7 = 24

    3*(6+(9-7)) = 24

    (3*7)-6+9 = 24

    3-7*(6-9) = 24

    3*7-(6-9) = 24

    (3*7)-(6-9) = 24

    3-(7*(6-9)) = 24

    (3*7)+9-6 = 24

    3+7*(9-6) = 24

    3*7+(9-6) = 24

    (3*7)+(9-6) = 24

    3+(7*(9-6)) = 24

    3+(9-6)*7 = 24

    3*(9+(6-7)) = 24

    3*(9-(7-6)) = 24

    (6-(7-9))*3 = 24

    6*(7-(9/3)) = 24

    (6+(9-7))*3 = 24

    (7*3)-6+9 = 24

    7*3-(6-9) = 24

    (7*3)-(6-9) = 24

    (7*3)+9-6 = 24

    7*3+(9-6) = 24

    (7*3)+(9-6) = 24

    (7-(6+9))*3 = 24

    (7-(9/3))*6 = 24

    7*(9-6)+3 = 24

    (7-(9+6))*3 = 24

    (7*(9-6))+3 = 24

    9+(3*7)-6 = 24

    (9+(3*7))-6 = 24

    (9-6)+3*7 = 24

    9-6+(3*7) = 24

    (9-6)+(3*7) = 24

    9-(6-(3*7)) = 24

    (9-6)+7*3 = 24

    (9-6)*7+3 = 24

    9-6+(7*3) = 24

    (9+(6-7))*3 = 24

    (9-6)+(7*3) = 24

    9-(6-(7*3)) = 24

    9+(7*3)-6 = 24

    (9+(7*3))-6 = 24

    (9-(7-6))*3 = 24

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