Cho đường tròn tâm (O; 50cm), M là một điểm cách O một khoảng là 30cm. Số dây của (O) đi qua M và có độ dài là một số nguyên tố là:

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Một số câu hỏi khác có thể bạn quan tâm.

• Theo chính sách quân điền, ruộng đất được ưu tiên chia cho
  
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• Cho hàm số . Tìm mệnh đề sai.         

• Điểm giống nhau về vai trò của ngành thủy sản và chăn nuôi là

• If I_____, I would have to thank all of you.

• Đảng và Nhà nước ta đã xác định một trong những đặc trưng của chủ nghĩa xã hội ở nước ta là xây dựng một xã hội như thế nào?
  
• Read the passage and choose the correct answer:
  Bill Gates was born in 1955 in Washington State. He grew up in a rich family. His parents sent him to a private school. There he met his business partner, Paul Alien. When they were in the eighth grade, they were writing programs for business computers and making money.
  In 1973, Gates was accepted at Harvard University. His parents were happy. They thought he would get over his obsession with computers and become a lawyer like his father. Two years later, Gates dropped out of Harvard to work on a computer program with his friend Allen. They worked eighteen hours a day in a dormitory room at Harvard. They were writing the program that would run one of the first personal computers. In 1975, they created a company called Microsoft to sell their products.
  Allen became ill with cancer and left Microsoft in 1983. He recovered a few years later and started his own company. Meanwhile, Microsoft became a giant company. By 1990, at the age of thirty-four, Gates was the youngest billionaire in the history of the United States. He was the "King of Software". He achieved his success with a lot of hard work. For more than ten years, he worked sixteen-hour days, seven days a week. He had a dream and the will to succeed. By 1997, he was the richest man in the United States.
  Question. How old was Bill Gates when he became the richest man in the United States?
  
  

• Jane would rather that it ______ winter now.

• Chọn đáp án không đúng về đặc điểm ngành hàng không:
  

• Thousands of cranes ________.