3/4/1/7怎么算到24

2个回答

  • 1:3 + (4 - 1) × 7

    2:3 + ((4 - 1) × 7)

    3:3 - (1 - 4) × 7

    4:3 - ((1 - 4) × 7)

    5:(3 + 1) × 7 - 4

    6:((3 + 1) × 7) - 4

    7:3 + (7 × (4 - 1))

    8:3 + 7 ×(4 - 1)

    9:3 × 7 + 4 - 1

    10:(3 × 7) + 4 - 1

    11:(3 × 7 + 4) - 1

    12:((3 × 7) + 4) - 1

    13:3 × 7 +(4 - 1)

    14:(3 × 7) + (4 - 1)

    15:3 - (7 × (1 - 4))

    16:3 - 7 ×(1 - 4)

    17:3 × 7 - 1 + 4

    18:(3 × 7) - 1 + 4

    19:(3 × 7 - 1) + 4

    20:((3 × 7) - 1) + 4

    21:3 × 7 -(1 - 4)

    22:(3 × 7) - (1 - 4)

    23:4 + 3 × 7 - 1

    24:(4 + 3 × 7) - 1

    25:(4 + (3 × 7)) - 1

    26:4 + (3 × 7) - 1

    27:4 + (3 × 7 - 1)

    28:4 + ((3 × 7) - 1)

    29:4 - 1 + 3 × 7

    30:(4 - 1) + 3 × 7

    31:4 - 1 +(3 × 7)

    32:(4 - 1) + (3 × 7)

    33:4 - (1 - 3 × 7)

    34:4 - (1 - (3 × 7))

    35:4 - 1 + 7 × 3

    36:(4 - 1) + 7 × 3

    37:4 - 1 +(7 × 3)

    38:(4 - 1) + (7 × 3)

    39:4 - (1 - 7 × 3)

    40:4 - (1 - (7 × 3))

    41:(4 - 1) × 7 + 3

    42:((4 - 1) × 7) + 3

    43:4 + 7 × 3 - 1

    44:(4 + 7 × 3) - 1

    45:(4 + (7 × 3)) - 1

    46:4 + (7 × 3) - 1

    47:4 + (7 × 3 - 1)

    48:4 + ((7 × 3) - 1)

    49:4 × 7 -(3 + 1)

    50:(4 × 7) - (3 + 1)

    51:4 × 7 - 3 - 1

    52:(4 × 7) - 3 - 1

    53:(4 × 7 - 3) - 1

    54:((4 × 7) - 3) - 1

    55:4 × 7 -(1 + 3)

    56:(4 × 7) - (1 + 3)

    57:4 × 7 - 1 - 3

    58:(4 × 7) - 1 - 3

    59:(4 × 7 - 1) - 3

    60:((4 × 7) - 1) - 3

    61:(1 + 3) × 7 - 4

    62:((1 + 3) × 7) - 4

    63:7 × 3 + 4 - 1

    64:(7 × 3) + 4 - 1

    65:(7 × 3 + 4) - 1

    66:((7 × 3) + 4) - 1

    67:7 × 3 +(4 - 1)

    68:(7 × 3) + (4 - 1)

    69:(7 × (3 + 1)) - 4

    70:7 × (3 + 1) - 4

    71:7 × 3 - 1 + 4

    72:(7 × 3) - 1 + 4

    73:(7 × 3 - 1) + 4

    74:((7 × 3) - 1) + 4

    75:7 × 3 -(1 - 4)

    76:(7 × 3) - (1 - 4)

    77:7 × 4 -(3 + 1)

    78:(7 × 4) - (3 + 1)

    79:7 × 4 - 3 - 1

    80:(7 × 4) - 3 - 1

    81:(7 × 4 - 3) - 1

    82:((7 × 4) - 3) - 1

    83:(7 × (4 - 1)) + 3

    84:7 × (4 - 1) + 3

    85:7 × 4 -(1 + 3)

    86:(7 × 4) - (1 + 3)

    87:7 × 4 - 1 - 3

    88:(7 × 4) - 1 - 3

    89:(7 × 4 - 1) - 3

    90:((7 × 4) - 1) - 3

    91:(7 × (1 + 3)) - 4

    92:7 × (1 + 3) - 4