Tìm tất cả các số nguyên dương n sao cho 1!+2!+···+n! là số nguyên tố.

Lại là câu nói đó, viết đáp án thui nha. Cái câu TV là nó bị lẫn vào ai lm cũng đc nha, ko lm cũng đc.

WHAT TEENAGERS DO WITH THEIR MONEY Thirteen-year olds do not spend as much money as their parents suspect at least not according to the findings of a (1) ………survey, Money and Change. The survey (2) …three hundred teenagers, 13-17 years old, from (3) …Britain. By the time they (4) …their teens, most children see their weekly allowance rise dramatically to an amazing national average of $ 5.14. Two thirds think they get (5) … money but most expect to have to do something to get it. Although they have more cash, worry about debt is (6) …among teenagers. Therefore, the (7) …of children (8) …an effort to save for the future. Greater access to cash (9) …teenagers does not, however, mean that they are more irresponsible (10) …a result. The economic recession seems to have encouraged (11) …attitudes to money, even in the case of children at the ages. Instead of wasting what pocket (12) …they have on sweets or magazines, the 13-year-olds who took (13) …in the survey seem to (14) …to the situation by saving more than half (15) …their cash. 1. a. late b. recent c. latest d. fresh 2. a. included b. contained c. counted d. enclosed 3. a. entire b. all over c. complete d. the whole 4. a. reach b. get c. make d. arrive 5. a. acceptable b. adequate c. satisfactory d. enough 6. a. gaining b. heightening c. increasing d. building 7. a. most b. maximum c. many d. majority 8. a. make b. do c. have d. try 9. a. among b. through c. between d. along 10. a. like b. as c. for d. in 11. a. aware b. knowing c. helpful d. cautious 12. a. cash b. money c. change d. savings 13. a. part b. place c. share d. piece 14. a. reply b. answer c. respond d. return 15. a. from b. as c. of d. for

Mọi người giúp e A= √(X ²+2Y ²—2XY—2X+4Y+10 Tìm giá trị nhỏ nhất của ẻm

Nêu quy tắc của hiện tại tiếp diễn

WHY I DISLIKE COMPUTERS Almost everyone says that computers are wonderful and that they are changing our own lives for the better by making everything faster and more reliable, but I am not so much sure that this is the case. The other day I was standing in large department store until waiting to pay for a couple of films for my camera when the assistant announced that the computer which controlled the till it had stopped working. I did not think this was a big problem and I set myself off to find another counter, but of course, all the machines are one part of the same system. So there we were: a shop full of customers, money at the ready, waiting to make our purchases, but it was quite clear that none out of the assistants knew what to do. They were not allowed to take our money and give to customers a written receipt, because the sales would not then have been recorded on the computer system. In the end, like with many other people, I left my shopping on the counter and walked out. Don’t you think so that’s ridiculous? It would never have happened before computers, and that, for me, is all the problem: we are beginning to depend on these machines for so completely that we simply cannot mange without them any more

giải pt `(x+4)\sqrt{x^2+7}=x^2+4x+7`

VẼ ace Hỏa quyền Cảm ơn ạ Ai vẽ nhanh mik vote 5* + ctlhn ak

Tô màu nhanh và đẹp thì sẽ được 1 cảm ơn, 5* và hay nhất. NL : Tô xấu = pay acc

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