Chứng minh rằng với mọi số tự nhiên n ≥ 2 , ta có thể chia các số 1 , 2,..., 3 n thành ba tập A , B , C đôi một không giao nhau sao cho tổng các phần tử ở mỗi tập là bằng nhau
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B: Tom has got three tortoises and two cats C: Is it sunny and hot in Hai Phong? 4. What is the weather like in Ha Noi today? 5:Lan is skating in the park
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8.what is your mother's name?
10.what's weather like in winter?
8. What is your mother's name? 1010. What's the wether like in winter?
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Hi, my name's Ya. I'm 11 years old, my birthday is May 30th. I'm from Vietnam. I'm a student at Dai Tu primary school. I'm in class 7a2. My hoppy are reading book and watching the TV. I'm learning English very much because i'm very exciting. I can swing very well. In my free time, I often chat with my friend and play the piano.
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1. My name is Phong.
2. I'm fine.
3. P - H - O - N - G
4. I'm twelve years old.
1) My name is Nhu Quynh
2) Pretty good / I'm Ok / I'm fine thanks how about you?
3) Q-U-Y-N-H
4) I'm in grade 3/ I'm 8 years old
ủa, đây là toán mà