2,3,6,9,17,()?怎么解啊!晕死
怎么解啊!晕死
2, 3, 6, 9, 17, ( ) a.33 b.27 c.45 d.19 看差为1,3,3,8 8=(3+1)*(3-1) x=(3+1)(8-1)=28 28+17=45