1. 0 ,1 ,3 ,8 ,21 ,( )
A.26
B.43
C.55
D.69
答案:C
解析:1×3-0=3,3×3-1=8,8×3-3=21,21×3-8=55
2. 0.003,0.06,0.9,12,( )
A.150
B.120
C.112
D.36
答案:A
解析:0.003=0.003×1,0.06=0.03×2,0.9=0.3×3,12=3×4,于是后面就是30×5=150
3. 1,7,8,57,( )
A.121
B.133
C.145
D.156
答案:A
解析:1^2+7=8,7^2+8=57,8^2+57=121
4. 4,12,8,10,( )
A.12
B.9
C.6
D.11
答案:B
解析:(4+12)/2=8,(12+8)/2=10,(8+10)/2=9
相關(guān)鏈接: