1 . 数列
满足:
,
.求证:对一切
,均有
.其中
表示不大于实数
的最大整数,
是斐波那契数列:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2251dc81292a17b6e6bf8a4beefd06af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c2284175c8b8d3c2d4e8f452a4ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c66c64695c4f015594ba909714a64c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763b41172fa5f9f9ef85ab59df78bc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a021cfd36426ae4957e32f0ee9c0a458.png)
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2 . 一束直线
的每条均过xOy平面内的抛物线
的焦点,
与抛物线C交于点
、
.若
的斜率为1,
的斜率为
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08494fc6d8d8dedfb64b38c8bfaf6c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a2d4945049c5a8f525f18763eba91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c852510dd237e315a4398632f1937f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc5c895153932c3e827a464664cef90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f633b5872611343f4eda7f25b80a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42d9764ef3d020c8978e406994a0eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b30973cbcde9e5ac886eab86f6674d8.png)
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3 . 设
是20个两两不同的正整数,且集合
中有201个不同的元素.求集合
中不同元素个数的最小可能值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cddcc224ef4ac220c316d8a67c7fd74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6c7c317022791a2a54ae2572006e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1a21dd5955f3672144cccf31ca03bd.png)
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4 . 已知
.若集合
中任两个元素的和都不能被6整除,则集合
中元素的个数最多为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290440f99e2200a18941e64f7ad713f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.36 | B.52 | C.74 | D.90 |
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2014高三·安徽·竞赛
5 . 从正12边形的顶点中取出四个顶点,其两两不相邻的概率为_______ .
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6 . 已知空间9点集
,其中任意四点不共面.在这9个点间联结若干条线段,构成一个图G,使图中不存在四面体.问图G中最多有多少个三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f503d1fd6c0f5851be772d8be2913525.png)
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7 . 从集合
中随机地、不放回地取出三个数
,然后再从剩下的2011个数中同样随机地、不放回地取出三个数
.则将
为长、宽、高的砖能放进以
为长、宽、高的盒子中的概率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8c80883caf31045f1aa796c679a0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e616142cd7122cb7c4e9bc46bb7394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e409ab2f8759dadcd023bf77aab74e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a773dadc42ecdf8b49748167f8fc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45896d3d9dc101df6703698906168c5b.png)
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8 . 正三棱柱
侧面六条对角线
、
、
、
、
、
中,若有一对
,其余还有
对也互相垂直,则
等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc65c549059934e69355d8ecc245da57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b362fffbd6e0fef50ca51fc300d23d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c4ad6c77a6459a37bc398ecd5e5253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675c6e2941eecb64b358527da4d4999c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da92060e1f241868d15df1cdcfaa552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617a5dd99e43fa539f28a1234293f8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64cb92b02c2f0e7e37837415d7289295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.2 |
B.3 |
C.4 |
D.5 |
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9 . 将正方体
的八个顶点用四种不同的颜色染色,要求同一条棱的两个端点颜色不相同,一共有种染法_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
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10 . 已知由1,2,…,1000这1000个正整数构成的集合A,先从集合A中随机取一个数
,取出后把
放回集合A;然后再从集合A中随机取一个数b,求
的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5a2b7739dd7663a53144b6ebba9645.png)
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