20/06/14 12:44:48.05 g0bjpO19.net
前>>875
>>748
n=24,与式=27
1+12+14=11+16
=10+17
=9+18
=8+19
=7+20
=6+21
=5+22
=4+23
=3+24
=2+25
12×10=120
1+11+15=13+14
=10+17
=9+18
=8+19
=7+20
=6+21
=5+22
=4+23
=3+24
=2+25
120(11+10+8+7+5+4+2+1)=12×10×48
=12×480
=4800+960
=5740(組)