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            • 1.
              等比数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),且\(4a_{1}\),\(2a_{2}\),\(a_{3}\)成等差数列\(.\)若\(a_{1}=1\),则\(S_{4}=(\)  \()\)
              A.\(15\)
              B.\(7\)
              C.\(8\)
              D.\(16\)
            • 2.
              已知等比数列\(\{a_{n}\}\)是递增数列,\(S_{n}\)是\(\{a_{n}\}\)的前\(n\)项和\(.\)若\(a_{1}+a_{3}=5\),\(a_{1}a_{3}=4\),则\(S_{6}=(\)  \()\)
              A.\(31\)
              B.\(32\)
              C.\(63\)
              D.\(64\)
            • 3.
              已知各项均为正数的等比数列\(\{a_{n}\}\)的前\(n\)项和为\(S_{n}\),且满足\(a_{6}\),\(3a_{4}\),\(-a_{5}\)成等差数列,则\( \dfrac {S_{4}}{S_{2}}=(\)  \()\)
              A.\(3\)
              B.\(9\)
              C.\(10\)
              D.\(13\)
            • 4.
              中国古代数学名著\(《\)张丘建算经\(》\)中记载:“今有马行转迟,次日减半,疾七日,行七百里”\(.\)其大意:现有一匹马行走的速度逐渐变慢,每天走的里程数是前一天的一半,连续走了\(7\)天,共走了\(700\)里,则这匹马第\(7\)天所走的路程等于\((\)  \()\)
              A.\( \dfrac {700}{127}\)里
              B.\( \dfrac {350}{63}\)里
              C.\( \dfrac {280}{51}\)里
              D.\( \dfrac {350}{127}\)里
            • 5.
              已知\(\{a_{n}\}\)是等比数列,若\(a_{1}=1\),\(a_{6}=8a_{3}\),数列\(\{ \dfrac {1}{a_{n}}\}\)的前\(n\)项和为\(T_{n}\),则\(T_{5}=(\)  \()\)
              A.\( \dfrac {31}{16}\)
              B.\(31\)
              C.\( \dfrac {15}{8}\)
              D.\(7\)
            • 6.
              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.\(31\)
            • 7.
              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
            • 8.
              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.\(6\)
            • 9.
              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.\(-55\)
            • 10.
              \(《\)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.\(60\)
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