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2021年春季《初等数论(省)》形成性考核4
1.[单选题] 当p=8k±3时,2是( )
A.一次剩余
B.二次剩余
C.二次非剩余
D.不确定
答:——C——
2.[单选题] 同余式x<sup>2</sup>=438(mod593)( )
A.有解
B.雅解
C.不确定
D.有小数解
答:——B——
3.[单选题] 设m,n是大于的奇数,且(a,mn)=1,则( )
A.<img width="130" height="51" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/bed226ec-55d6-49a9-989b-9b0c76aa72dc/201610251617311.jpg" />
B.<img width="130" height="55" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/bed226ec-55d6-49a9-989b-9b0c76aa72dc/20161025161741110.jpg" />
C.<img width="93" height="48" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/bed226ec-55d6-49a9-989b-9b0c76aa72dc/20161025161750923.jpg" />
D.不确定
答:——A——
4.[单选题] 17的平方剩余的个数为( )
A.5
B.6
C.7
D.8
答:————
5.[单选题] 设a<sub>1</sub>=a<sub>2</sub>(modm),则( )
A.<img width="99" height="60" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/53d6b801-67b7-4367-94c2-90307f834fe8/20161025161922606.jpg" />
B.<img width="97" height="52" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/53d6b801-67b7-4367-94c2-90307f834fe8/20161025161931904.jpg" />
C.<img width="102" height="60" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/53d6b801-67b7-4367-94c2-90307f834fe8/20161025161941436.jpg" />
D.不确定
答:————
6.[单选题] 同余式x<sup>2</sup>=57(mod64)的解的个数( )
A.3
B.1
C.2
D.4
答:————
7.[单选题] 模p的简化剩余系中平方剩余与平方非剩余的个数分别是( )
A.<img width="98" height="53" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/33dd4c20-72e7-4fca-a7e9-1bf79ee2ffc2/201610251688439.jpg" />
B.<img width="102" height="55" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/33dd4c20-72e7-4fca-a7e9-1bf79ee2ffc2/2016102516819219.jpg" />
C.<img width="98" height="52" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/33dd4c20-72e7-4fca-a7e9-1bf79ee2ffc2/2016102516829967.jpg" />
D.<img width="96" height="40" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/33dd4c20-72e7-4fca-a7e9-1bf79ee2ffc2/201610251684190.jpg" />
答:————
8.[单选题] 如果(a,p)=1,则a是模p的平方非剩余的充要条件是( )
A.<img width="113" height="43" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/e72b8c90-c2d6-4f74-a910-741e6da75af7/20161025163228658.jpg" />
B.<img width="116" height="43" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/e72b8c90-c2d6-4f74-a910-741e6da75af7/20161025163244196.jpg" />
C.<img width="129" height="43" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/e72b8c90-c2d6-4f74-a910-741e6da75af7/2016102516333151.jpg" />
D.<img width="117" height="38" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/e72b8c90-c2d6-4f74-a910-741e6da75af7/20161025163312526.jpg" />
答:————
9.[单选题] 不定方程x<sup>2</sup>+23y=17( )
A.雅解
B.有雅穷多解
C.有限个解
D.雅法确定
答:————
10.[单选题] 当p=8k±1时,2是( )
A.一次剩余
B.二次剩余
C.二次非剩余
D.不确定
答:————
11.[单选题] 383是素数,<img width="55" height="55" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/a599184f-5e0c-42b9-a154-36d2030ac420/20161025162120887.jpg" />=( )
A.1
B.2
C.3
D.4
答:————
12.[单选题] 素数17的平方非剩余是( )
A.1,2,3,4,5,6,7,8, 10
B.1,2,4,8,9,13,15,16
C.2,4,6,8,10,12,14,16
D.3,5,6,7,10,11,12,14
答:————
13.[单选题] 形如4n-1的数不能写成( )个平方数的和
A.0
B.1
C.2
D.3
答:————
14.[单选题] 11的平方非剩余的个数为( )
A.0
B.2
C.8
D.10
答:————
15.[单选题] 563是素数,<img width="54" height="54" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/3d4f2e15-6683-48ca-9344-652e1fd97d83/2016102516153690.jpg" />=( )
A.0
B.1
C.2
D.3
答:————
16.[判断题] 素数写成两个平方数和的方法不是惟一的.
A.√
B.×
答:————
17.[判断题] 对于同一素数p,二平方非剩余之积为平方剩余.
A.√
B.×
答:————
18.[判断题] 如果p,q是奇素数,(p,q)=1,则<img width="162" height="60" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/c9a9f4e3-966c-49a5-b4f9-6f717283e29e/2016102516128884.jpg" />
A.√
B.×
答:————
19.[判断题] 同余式x<sup>2</sup>=5(mod29)有解
A.√
B.×
答:————
20.[判断题] 素数17的平方剩余有16个.
A.√
B.×
答:————
21.[判断题] 形如4m+1的素数可以写成两个平方数的和.
A.√
B.×
答:————
22.[判断题] 假设x=b(modp)是x<sup>2</sup>=a(modp)的解,则x=-b(modp)是x<sup>2</sup>=a(modp)的解
A.√
B.×
答:————
23.[判断题] 一个能表成两个平方数和的数与一个平方数的乘积,仍然是两个平方数的和.
A.√
B.×
答:————
24.[判断题] 同余式x<sup>2</sup>=5(mod19)有解
A.√
B.×
答:————
25.[判断题] 设p为素数,则<img width="62" height="51" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201610/728ea949-b462-4032-9f77-f508bb935780/2016102516315169.jpg" />
A.√
B.×
答:———— |
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