16, 25, 36, 50, 81, 100, 169, 200, ( )
100 3/4,______,64 16/12,49 64/36,36 256/108 ( )A.81 4/5B.81 5/9C.82D.81
点击查看答案
225,l96,169,( )。A.12lB.81C.100D.144
81,64,121,36,( ),16 A. 144 B. 169 C. 196 D. 225
4,27,16,25,36,23,64,21,( )。 A. 81 B. 100 C. 121 D. 19
-81, -36, -9, 0, 9, 36, ( )。 A.49 B.64 C.81 D.100
15,16,25,9,81,()A.36 B.39 C.49 D.54
100 +3/4 ( ) 64+16/12 49+64/36 36+256/108 A. 81+4/5 B. 81+5/9 C. 82 D. 81