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若m是一个给定的正整数,如果两个整数a、b用m除所得的余数相同,则称a与b对m校...
若m是一个给定的正整数,如果两个整数a、b用m除所得的余数相同,则称a与b对m校同余,记作a≡b[mod(m)],例如1≡13[mod(4)],若22012≡r[mod(7)],则r可能为( )
A.5
B.4
C.3
D.2
考点分析:
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