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            • 1.
              已知\(\{a_{n}\}\)是首项为\(1\)的等比数列,数列\(\{b_{n}\}\)满足\(b_{1}=2\),\(b_{2}=5\),且\(a_{n}(b_{n+1}-b_{n})=a_{n+1}\),则数列\(\{b_{n}\}\)的前\(n\)项和为 ______ .
            • 2.
              已知正项等比数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),且\(a_{1}a_{6}=2a_{3}\),\(a_{4}\)与\(2a_{6}\)的等差中项为\( \dfrac {3}{2}\),则\(S_{5}=(\)  \()\)
              A.\(36\)
              B.\(33\)
              C.\(32\)
              D.\(31\)
            • 3.
              已知等比数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),\(a_{1}+a_{3}= \dfrac {5}{2}\),且\(a_{2}+a_{4}= \dfrac {5}{4}\),则\( \dfrac {S_{n}}{a_{n}}\)等于\((\)  \()\)
              A.\(4^{n-1}\)
              B.\(4^{n}-1\)
              C.\(2^{n-1}\)
              D.\(2^{n}-1\)
            • 4.
              中国古代数学著作\(《\)算法统宗\(》\)中有这样一个问题:“三百七十八里关,初步健步不为难,次日脚痛减一半,六朝才得到其关,要见次日行里数,请公仔细算相还\(.\)”其大意为:“有一个人走\(378\)里路,第一天健步行走,从第二天起脚痛每天走的路程为前一天的一半,走了\(6\)天后到达目的地\(.\)”则该人第五天走的路程为\((\)  \()\)
              A.\(48\)里
              B.\(24\)里
              C.\(12\)里
              D.\(6\)里
            • 5.
              已知等比数列\(\{a_{n}\}\)的前\(n\)项积为\(T_{n}\),若\(a_{1}=-24\),\(a_{4}=- \dfrac {8}{9}\),则当\(T_{n}\)取最大值时,\(n\)的值为\((\)  \()\)
              A.\(2\)
              B.\(3\)
              C.\(4\)
              D.\(6\)
            • 6.
              已知等比数列\(\{a_{n}\}\),\(a_{2}= \dfrac {1}{4}\),\(a_{5}= \dfrac {1}{32}\),则数列\(\{\log _{2}a_{n}\}\)的前\(10\)项之和是\((\)  \()\)
              A.\(45\)
              B.\(-35\)
              C.\(55\)
              D.\(-55\)
            • 7.
              \(《\)算法统宗\(》\)是明朝程大位所著数学名著,其中有这样一段表述:“远看巍巍塔七层,红光点点倍加增,共灯三百八十一”,其意大致为:有一栋七层宝塔,每层悬挂的红灯数为上一层的两倍,共有\(381\)盏灯,则该塔
              中间一层有\((\)  \()\)盏灯.
              A.\(24\)
              B.\(48\)
              C.\(12\)
              D.\(60\)
            • 8.
              设数列\(\{a_{n}\}\)的前项和为\(S_{n}\),如果\(a_{1}=1\),\(a_{n+1}=-2a_{n}(n∈N^{*})\),那么\(S_{1}\),\(S_{2}\),\(S_{3}\),\(S_{4}\)中最小的是\((\)  \()\)
              A.\(S_{1}\)
              B.\(S_{2}\)
              C.\(S_{3}\)
              D.\(S_{4}\)
            • 9.
              已知各项为正的等比数列\(\{a_{n}\}\)中,\(a_{2}a_{3}=16\),则数列\(\{\log _{2}a_{n}\}\)的前四项和等于 ______ .
            • 10.
              设各项均为正数的等比数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),已知\(a_{1}=1\),\(S_{3}=7\).
              \((1)\)求\(\{a_{n}\}\)的通项公式;
              \((2)\)若数列\(\{b_{n}\}\}\)满足\(b_{n}=na_{n}\),求数列\(\{b_{n}\}\)的前\(n\)项和\(T_{n}\).
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