2022年軍隊(duì)文職公共科目考試講義+真題練習(xí)：數(shù)字推理

第三篇數(shù)量關(guān)系與資料分析

?第一章I數(shù)字推理

第一節(jié)基礎(chǔ)數(shù)列

1.等差數(shù)列：相鄰數(shù)字之間差相等

例：2,5,8,11,14,17,..

2.等比數(shù)列：相鄰數(shù)字之間商相等

例：3,-6,12,-24,48,..

3.質(zhì)數(shù)數(shù)列：只有1和它本身兩個(gè)約數(shù)的自然數(shù)叫質(zhì)數(shù)

例：2,3,5,7,11,13,17,19,..

4.合數(shù)數(shù)列：除了1和它本身還有其他約數(shù)的自然數(shù)叫合數(shù)

例：4,6,8,9,10,12,14,15,16,18,20,.

5.周期數(shù)列：數(shù)字或符號(hào)之間存在周期性循環(huán)

例：5,2,0,5,2,0,.

6.簡單遞推數(shù)列

遞推和例：1,2,3,5,8,13,……

遞推差例：15,8,7,1,6,-5,......

遞推積例：2,2,4,8,32,256,......

遞推商例：108,18,6,3,2,......

[例1]2,9,16,23,30,()

A.37B.39

C.41D.43

[例2]-2,6,-18,54,()

A.-162B.-172

C.152D.16

【例3】11,13,17,19,23,29,()

A.41B.37

C.33D.31

【例4】21,33,45,57,()

A.59B.62

C.65D.69

第二節(jié)特征數(shù)列

一、多重?cái)?shù)列

[例1]13,4,11,8,9,16,7,32,(),()

A.5,64B.3,64

C.5,40D.3,40

【例2】16,23,34,40,52,57,(),74

A.62B.65

C.70D.72

【例3】51,49,87,13,45,55,63,()

A.67B.37

C.47D.57

【例4】1,4,9,36,17,68,25,()

A.110B.100

C.98D.86

【例5】9,-1,-8,-3,5,-2,-3,-5,8,-9,(),11

A.-2B.2

C.-lD.1

二、幕次數(shù)列

【例6】L16,49,100,169,()

A.289B.324

C.361D.256

【例7】0,1,4,27,16,125,()

A.25B.36

C.216D.246

【例8】(),32,81,64,25,6

A.16B.36

C.1D.49

),1

【例9】1,8：,9,4,(

6

A.3B.2

C.1D.l

3

【例1019,26,51,124,173,()

A.216B.294

C.295D.316

【例11163,124,215,3,42,()

A.429B.431

C.511D.547

【例12](),10,30,68,130

A.2B.3

C.4D.6

三、分?jǐn)?shù)數(shù)列

9345

【例13】L

57911

[例14]&近弧^471(、

3333

A^2^

33

r^256.口2/222

u

L.3-3

.,,12630、

【r例15】(z)

23511

54150

A.B.

1723

15033Q

C.27D.41

154117

【例16】)

275138

R西

B17

n1^

C.19D.19

4，0

【例17]2,1,6,,()

———

7513

A.1B.2

34

77

【例19]

【例22】數(shù)字推理：觀察數(shù)字規(guī)律選擇最合適的數(shù)字填補(bǔ)到問號(hào)處。（）

2253

?

42

5643

A.31B.36

C.41D.43

第三節(jié)非特征數(shù)列

一、多級(jí)數(shù)列

【例1】133,121,106,88,67,()

A.56B.51

C.43D.34

【例2】-1,1,-3,5,-11,()

A.21B.-13

C.17D.19

【例3】L10,31,70,133,()

A.136B.186

C.226D.256

【例4】2,6,21,43,82,()

A.130B.134

C.144D.156

[例5]2,4,12,48,240,()

A.1645B.1440

C.1240D.360

二、遞推數(shù)列

【例6】7,11,18,29,47,()

A.94B.96

C.76D.74

【例7]2,4,7,13,24,44,81,()

A.151B.149

C.135D.132

【例8】1,1,3,7,17,41,()

A.119B.109

C.99