四个数字加起来等于50的哪些{在1~20之间}

2个回答

  • 1+10+19+20, 1+11+18+20, 1+12+17+20, 1+12+18+19,

    1+13+16+20, 1+13+17+19, 1+14+15+20, 1+14+16+19,

    1+14+17+18, 1+15+16+18, 2+9+19+20, 2+10+18+20,

    2+11+17+20, 2+11+18+19, 2+12+16+20, 2+12+17+19,

    2+13+15+20, 2+13+16+19, 2+13+17+18, 2+14+15+19,

    2+14+16+18, 2+15+16+17, 3+8+19+20, 3+9+18+20,

    3+10+17+20, 3+10+18+19, 3+11+16+20, 3+11+17+19,

    3+12+15+20, 3+12+16+19, 3+12+17+18, 3+13+14+20,

    3+13+15+19, 3+13+16+18, 3+14+15+18, 3+14+16+17,

    4+7+19+20, 4+8+18+20, 4+9+17+20, 4+9+18+19,

    4+10+16+20, 4+10+17+19, 4+11+15+20, 4+11+16+19,

    4+11+17+18, 4+12+14+20, 4+12+15+19, 4+12+16+18,

    4+13+14+19, 4+13+15+18, 4+13+16+17, 4+14+15+17,

    5+6+19+20, 5+7+18+20, 5+8+17+20, 5+8+18+19,

    5+9+16+20, 5+9+17+19, 5+10+15+20, 5+10+16+19,

    5+10+17+18, 5+11+14+20, 5+11+15+19, 5+11+16+18,

    5+12+13+20, 5+12+14+19, 5+12+15+18, 5+12+16+17,

    5+13+14+18, 5+13+15+17, 5+14+15+16, 6+7+17+20,

    6+7+18+19, 6+8+16+20, 6+8+17+19, 6+9+15+20,

    6+9+16+19, 6+9+17+18, 6+10+14+20, 6+10+15+19,

    6+10+16+18, 6+11+13+20, 6+11+14+19, 6+11+15+18,

    6+11+16+17, 6+12+13+19, 6+12+14+18, 6+12+15+17,

    6+13+14+17, 6+13+15+16, 7+8+15+20, 7+8+16+19,

    7+8+17+18, 7+9+14+20, 7+9+15+19, 7+9+16+18,

    7+10+13+20, 7+10+14+19, 7+10+15+18, 7+10+16+17,

    7+11+12+20, 7+11+13+19, 7+11+14+18, 7+11+15+17,

    7+12+13+18, 7+12+14+17, 7+12+15+16, 7+13+14+16,

    8+9+13+20, 8+9+14+19, 8+9+15+18, 8+9+16+17,

    8+10+12+20, 8+10+13+19, 8+10+14+18, 8+10+15+17,

    8+11+12+19, 8+11+13+18, 8+11+14+17, 8+11+15+16,

    8+12+13+17, 8+12+14+16, 8+13+14+15, 9+10+11+20,

    9+10+12+19, 9+10+13+18, 9+10+14+17, 9+10+15+16,

    9+11+12+18, 9+11+13+17, 9+11+14+16, 9+12+13+16,

    9+12+14+15, 10+11+12+17, 10+11+13+16, 10+11+14+15,

    10+12+13+15, 11+12+13+14, 共有138组数据满足条件!