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答案勘误

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信息安全数学基础（一）/期末试卷/手做答案.md
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@ -1,13 +1,13 @@
注：扫描件中模糊处均不影响做题
# 一、选择题
## BCBBA CBCCA
## BCBDA CBCCA
# 二、填空题
1. 2
2. 4
3. $x\equiv7\ (mod\ 11)$
4. $s=47,t=-18,(a,b)=33$
4. $s=47,t=-18,(a,b)=3$
5. $x\equiv11\ (mod\ 47), y\equiv1\ (mod\ 47)$
6. -1
7. $x\equiv2,5,8\ (mod\ 9)$