[思维小吧] 1,差数列:数列中每两个数之间产生的差组成的数列叫差数列. 如:1,2,4,7,11,16,( ),( ). 从第2项起,每一项减去前一项得到新的数列:1,2,3,4,5,6,... 2,有些数列可以拆成两个数列(或者说有两个数列组成),我们可以拆成两个数列来找规律.如:24,5,26,5,28,5,30,5,( ),( ). 以上数列可以拆成以下两个数列来思考:24,26,28,( )和5,5,5,5,( ). 3,有些数列中任意两个数相加或相乘等于第三个数. 如:1,2,3,5,8,13,21,( ).(1+2=3;2+3=5...13+21=34) 1,2,2,4,8,32,( ).(1×2=2;2×2=4...8×32=256) [智慧冲浪] (1)3,5,8,12,17,23,( ),( ). (2)10,16,24,34,46,( ),76,( ). (3)53,50,46,41,35,28,( ),( ). (4)400,390,370,340,( ),250,190,( ). (5)1,1,2,6,24,120,( ). (6)9,3,7,3,5,3,( ),( ). (7)87,5,86,5,85,5,( ),( ). (8)10,1,12,2,14,3,16,4,( ),( ). (9)55,10,66,9,77,8,88,7,( ),( ). (10)1,15,2,13,4,11,8,9,16,( ),( ). (11)300,10,250,20,200,30,150,( ),( ). (12)1,1,2,3,5,8,13,( ),( ). (13)12,1,13,14,27,41,( ),( ). (14)2,3,6,( ),108,1944. (15)( ),6,11,17,28,( ),73,118.