1,2,9,121,()
A.251 B.441 C.16900 D.960
1, 2, 9, 121,A.251 B.441 C.16900 D.96
144,225,9,324,()。 A.441 B.225 C.121 D.676
144, 225, 9, 324, ()。A.441 B.225 C.121 D.676
1,2,9,121,() A.251B.441C.16900D.960
1,2,9,121,()。 A.210B.16900C.289 D.25600
1,2,9,121,()。 A.251 B.441 C.16900 D.960