Mathematics
Senior High
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合ってますか?
A={n|nは12の正の約数}, B ={n|n は 20以下の素数}について,
練習
7
次の集合を求めよ。
(1) A∩B
(2) AUB
[21
AUB=31,23.4.5.6.7.
(1.12.13.17.193
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ありがとうございます!!