Mathematics
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37の二乗のmod7を0,1,2,3,4,5,6のいずれかから当てなきゃダメなんですけど答えは4です。何でですか?

(6) 372 = (mod 7) )

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✨ Best Answer ✨

37=35+2ですね
となれば、37=7×5+2
これを2乗すれば7で割った余は4かと

ʔ•̫͡•ʔ

なるほど!ありがとうございます!

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