273期：开？对{16+28+36+48+47+30+46+32+39+40+15+14+13+49+20+08+23+02+04+37+07+44+22+43+17+12+06+29+35+26}准
272期：开？对{39+08+13+35+20+17+26+33+24+22+30+41+23+37+40+29+05+45+04+15+47+14+43+19+09+12+21+02+28+27}牛27准
271期：开？对{04+18+40+49+37+02+03+42+45+36+16+38+24+09+30+35+43+13+27+48+19+26+15+44+10+39+34+14+07+25}牛39准
