Đáp án:
câu 1 :B
câu 2:A
Giải thích các bước giải:
câu 1 :
tổng số bút trong hộp là 8+6+10=24
vì lấy ra 1 cái bút ngẫu nhiên tùy ý (ko có điều kiện đi kèm) nên ta có $C^1_{24}=24$
câu 2 :
ta có $u_{n+1}-$ $u_{n}=3(n+1)-2-3n+2=3$
vậy d=3
Câu 1: B
Câu 2 : A
vẽ anime/chibi/... (ko nhận tranh sẵn, vẽ có tâm vào. vẽ xấu -> bc thẳng tay, 1*, tặng thêm 1 cái tát phờ ri đếy nhá :)) tôi cảnh cáo trc r, vẽ xấu r đừng bảo tại sao tôi ác) .-. NL: ai bày cho tui lm sao để quên 1 ng đuy, dạo này ớn lạnh lắm ròi -___-
Tìm n € ? 1)n+2 chia hết cho n-4 2) 2n+5 chia hết cho n+1 3) n+4 chia hết cho 2n + 3 4)2n+9 chia hết cho 4n+3 5) n^2 + n + 4 chia hết cho n+1
Vẽ đậu mầm nha VN : thắng 2-1
Anh chị làm giúp em đề này với ạ
giải giúp mình : 1. Look ! Lan ( play ) ________ the piano very well 2. He can ( swim ) __________ . But I can' t do it 3 . I ( watch ) _________ TV tonight 4. He ( enjoy ) ________ the party now Có nhóm nào tuyển người thì cứ gọi mình . Mình mới học lớp 6 . Nhóm tuyển môn Tiếng Anh nha .
Viết đoạn văn 200 chữ về quan điểm hạnh phúc là khi được làm 1 con người bình thường. TỚ ĐANG CẦN GẤP Ạ
29. I have just watched the weather.....................on VTV1, and I know that it’s going to be sunny tomorrow. a. forecast b. forecasting c. forecasted d. forecaster 30. It is impossible to......................why different people like different things. a. account b. cause c. reason d. explain 31. The president will now.........................the meeting. a. talk b. speak c. say d. address 32. After making a....................of England, the circus is coming again to Manchester. A. time b. chance c. tour d. date 33. The young soldier......................at the target and fired. a. pointed b. aimed c. directed d. tried 34. She lives all.........................in that villa. A. alone B. lonely C. isolated D. solitary 35. Have you got a(n).................................suggestion ? A. changing B. replaced C. various D. alternative 36. She was proud of her Vietnamese.......................... A. genetics B. altar C. ancestry D. species 37. The.......................of your letter is pleasant, sincere, and straightforward. A. a voice B. melody C. speech D. tone 38. The.......................is the mixture of gases that surrounds any planet or star. A. atmosphere B. air C. cloud D. sky 39. ................at these lectures is very important to us. A.Aattendance B. Suspicion C. Consideration D. Attention 40. Language is not necessarily the private.........................of those who use it. A. job B. work C. career D. property 41. I meant it........................as a joke. A. gladly B. badly C. merely D. as well 42. The zoo is now open ..........................all visitors. A. for B. with C. to D. on 43. He had to act immediately; ............................, he would have been too late. A. consequently B. nevertheless C. still D. otherwise 44. The weather in Dalat is neither too hot in summer..................too cold in winter. A. or B. nor C. or else D. otherwise 45. As I was walking along the street, I saw.................$ 10 note on................pavement. A. a/a B. the/the C. a/the D. the/a 46. It was said that Robinhood robbed.....................rich and gave the money to............poor. A. a/a B. a/the C. the/the D. the/a 47. The part of town where I live is very noisy at night, ..........makes it difficult to sleep. A. this B. where C. place D. when 48. They know that the Prime Minister is in favour of the new law. A. The Prime Minister is known to have been in favour of the new law B. They know the Prime Minister to be in fovour of the new law C. The Prime Minister is known to be in favour of the new law D. They know the Prime Minister to have been in favour of the new law 49. They think that the prisoner escaped by climbing over the wall. A. The prisoner is thought to escape by climbing over the wall B. The prisoner is thought escaped by climbing over the wall C. The prisoner is thought having escaped by climbing over the wall D. The prisoner is thought to have escaped by climbing over the wall. 50. I wish you.......................here yesterday. A. were B. had been C. to be D. be
viết đoạn văn ( 3 câu) miêu tả con vật có sử dụng so sánh hoặc nhân hóa ( chỉ được 3 câu )
goes/school/to/Monday/from/every week/he/to/Friday Hãy sắp xếp lại câu trên
Các bạn giúp mình với. Nhanh lên nha ! Ai tl đúng vote cho 5*, cảm ơn và hay nhất ~~
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến