285期:用夫台((01+02+05+08+14+15+16+17+18+21+22+25+26+27+28+30+31+40+41+42+43+45+46+47))开:21对
286期:用夫台((01+04+05+09+10+11+12+15+16+19+21+27+28+31+32+33+39+40+41+43+44+46+47+49))开:45X
287期:用夫台((02+08+10+14+15+16+20+23+24+27+28+30+31+32+33+34+35+36+39+40+41+47+48+49))开:40对
288期:用夫台((01+02+03+04+06+11+12+14+16+17+18+19+20+21+24+26+27+33+35+36+38+41+46+49))开:26对
289期:用夫台((01+02+05+07+08+09+13+15+16+18+21+23+28+29+33+36+37+39+41+42+43+45+46+48))开:04X
290期:用夫台((02+04+05+06+07+09+10+11+13+14+18+19+22+27+28+31+33+35+37+38+42+43+45+47))开:11对
291期:用夫台((03+04+07+14+16+17+18+19+21+22+24+25+28+29+30+32+34+35+36+39+41+47+48+49))开:==?