回复:一组数字,找出其中规律,并填写完整:1 2 3 4 6()12

来源: 2009-12-17 16:28:32 [旧帖] [给我悄悄话] 本文已被阅读:

8.
3=2+1, 4=3+2-1, 6=4+3-2+1,8=6+4-3+2-1,12=8+6-4+3-2+1.
Funny question,...
By math,you can put any number x and you can find a polynomial satisfing :P(1)=1, P(2)=2...P(6)=x....