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a) Tìm ƯC của (n-1) và (3n+2) (n thuộc Z) b) Chứng minh rằng: (3n-4 ; n+1) là số nguyên tố (n thuộc Z) mn giúp mk nhé mk cần gấp
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There once was an old woman (1) ………………………….lived in a shoe. This must have been very cramped and difficult (2) ………………………….living in a shoe is not very comfortable, I expect. One day, she went out and there (3) ………………………….some children playing in the street nearby where she lived. (4) ………………………….began shouting at her. “You silly old woman, why do you live in a shoe?”, they shouted, and other things like that. They were very insulting (5) ………………………….the old woman. I don’t know why the old woman had to live in a shoe, but she (6) …………………………. have been very poor, and it was not nice to (7)……………………….. fun of the poor woman because she was so hard up that she had nowhere (8)………………………… to live. But children can be very cruel sometimes (9) ………………………….this case wasn’t an exception. However, on this occasion the old woman didn’t just think their insults meekly, but became very angry and shouting “I will teach you a (10) ………………………….“, she chased them with a cane. Mọi người giúp mình vs ạ

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