1,1,8,16,7,21,4,16,2,( )A.10 B.20 C.30 D.40
问题描述:
1,1,8,16,7,21,4,16,2,( )
A.10 B.20 C.30 D.40
答
1*1=1
8*2=16
7*3=21
4*4=16
2*5=10
所以是10