Có bao nhiêu cách xếp 100 sản phẩm giống nhau vào 4 thùng giấy có đánh số thứ tự từ 1-4 sao cho mỗi thùng có ít nhất 1 sản phẩm?.

nói về bạn pink , bạn của may nha !

-3x^5 +y^2 + 3x^5 -1 Bậc của đa thức là

Ở lúa, hai tính trạng thân cao và hạt gạo đục trội hoàn toàn so với hai tính trạng thân thấp và hạt gạo trong. Trong 1 phép lai giữa hai cây thu được F1 có kết quả sau: -120 cây thân cao, hạt gạo đục -119 cây thân cao, hạt gạo trong -40 cây thân thấp, hạt gạo trong -41 cây thân thấp, hạt gạo đục Hãy biện luận để xác định kiểu gen, kiểu hình ủa bố mẹ và lập sơ đồ lai. Biết 2 cặp tính trạng di truyền độc lập

giải giúp mình nhé mình đang cần gấp trong hôm nay

Bài 2: B=4/√x +2 (đk x>= 0) 2, tìm x nguyên để B nguyên

IV,Choose the best answer to complete the sentences. 1.Bella getting fat ,so she want to lose____________. A.Blance B.health C.weight D.interest

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ai giúp với !!! IV. Change these sentences into passive ones. 1.We held the meeting on the second floor. ..................................................................................................................... 2. They received the goods. ...................................................................................................................... 3.Somebody cleans that room everyday. ........................................................................................................................ 4. They have built a new hospital near the airport. ........................................................................................................................ 5.The restaurant serves seafood every Monday. ........................................................................................................................ 6.Someone has stolen his gun. ........................................................................................................................ 7.The directors have fired those lazy clerks. .......................................................................................................................... 8.People speak English in the US ......................................................................................................................... V.Choose the correct word marked A, B, or C fill each blank in the following passage. HOBBY There are many reasons (1)________ it is important to have a hobby. First of all, a hobby can be a remedy for your (2)________. Because it is the activity you choose for yourself, it will always give you pleasure and (3)________ you relax. Even if you just spend a little time enjoying your hobby, you can see the difference (4)________ your spirit. Second, some hobbies can also (5)________ you financially. Many old people enjoy gardening. They grow a lot of trees and vegetables, so they can sell them for some money. In (6)________, a hobby can help you connect with other people. If you like collecting stamps, you can (7)________ a stamp club to share your albums with other collectors. If your hobby is carving eggshells, you can give your products to your friends (8)________ gifts. 1.A . for B. why C. because 2.A .happiness B. pain C. tiredness 3.A. help B. have C. do 4.A. for B. in C. on 5.A. harm B. give C. benefit 6.A. addition B. general C. conclusion 7.A.take part B. go C. join 8. A. like B. as C. for VI.Read and fill in the blanks with ONE word given in the box. hobby improve when taught writes because ending might myself cultures My name is Sara. My favourite (1) _________ is reading. I enjoy reading a book when I am free. I started to do it (2)________I was four years old. The first time I did it, I felt interested. So I kept reading. The teachers (3)_________ me to read the difficult words. I was happy when I read a story with a happy (4) _________. I was thrilled when I read a detective story. I enjoy reading (5) _______ I like to explore the imaginative world of my favourite author, J.K. Rowling who (6) ___________ “ Harry Potter” . There are a lot of advantages of reading. Reading can make me relaxed and calm. I can also learn new vocabulary items. Then I can further (7) __________my English. Moreover, it can give me an unlimited imagination, so I can write books in the future. I can learn the different (8) _______ and customs of other countries in the world too. I read at least one hour every day. I read books by (9) ___________. I usually read books at home. I wish I could read different kinds of books because it (10) ______ be very challenging.

Giúp mình vs ạ nếu dc ghi rõ công thức ra cho mình vs