题文
数列{an}的前n项和为Sn,若a1="1," an+1 =3Sn(n ≥1),则a6=( )
| A.3 ×44 | B.3 ×44+1 |
| C.44 | D.44+1 |
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推荐试卷
数列{an}的前n项和为Sn,若a1="1," an+1 =3Sn(n ≥1),则a6=( )
| A.3 ×44 | B.3 ×44+1 |
| C.44 | D.44+1 |
试题篮
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