6,19,63,( ) A.208 B.210 C.204 D.209

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6,19,63,()A.208B.210C.204D.2096,19,63,()A.208B.210C.204D.2096,19,63,()A.208B.210C.204D.209把五个数设为a,b,

6,19,63,( ) A.208 B.210 C.204 D.209
6,19,63,( ) A.208 B.210 C.204 D.209

6,19,63,( ) A.208 B.210 C.204 D.209
把五个数设为a,b,c,d,e.
3*b+a =3*1+3=6
3*c+b =3*6+1=19
3*d+c =3*19+6=63
3*e+d =3*63+19=208
选A