来自程岷沙的问题
简算2/3+1/6+1/9+1/12+1/15+1/18
简算2/3+1/6+1/9+1/12+1/15+1/18
1回答
2020-09-26 14:11
简算2/3+1/6+1/9+1/12+1/15+1/18
简算2/3+1/6+1/9+1/12+1/15+1/18
13(2+12+13+14+15+16)=13(2+1+14+15)=1+320=2320