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Сколько нечетных трехзначных чисел можно составить из цифр 3,4,8,6 ПРИ УСЛОВИИ,ЧТО ЦИФРЫ В ЗАПИСИ ЧИСЛА НЕ МОГУТ ПОВТОРЯТЬСЯ?
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Предмет:
Математика -
Автор:
vanceqoym - 5 лет назад
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Ответы 1
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Нечетные,значит на последнем может стоять только 3(т.к. только 3 - нечётное)463,643,483,843,683,863-всего 6 чисел
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Автор:
calixtosddr - 5 лет назад
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0
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ПОМОГИТЕ С ТЕСТАМИ СРОЧНО!!!
I. Употребите нужную форму глагола, выбрав правильный вариант ответа.
1.Paula Fairfax ____ in America.
a.live b. are living c. lives d. is living
2. He will leave as soon as mother (come).
a.come b. comes c. came d. will come
3. She always _____ to the South with her family.
a.goes b. go c. will go d. went
4. Yesterday we _____ football.
a.plays b. play c. played d. playing
5. Tomorrow he _____ to the cinema with his girlfriend.
a.go b. goes c. will go d. well
6.____ he play volleyball well?
a.does b. do c. did d. go
7.___ you visit your relatives last year?
a.will b. do c. play d. did
8. She ___ reading the book now.
a.is b. are c. will d. am
9. They ____ listening to the music the whole evening yesterday.
a.was b. were c. are d. am
10. They ___ the TV when I came in.
a. watched b. were watching c. have watched d. watch
11. When I phoned she ___ a bath.
a. had b. was having c. was have d. has
12. My parents ___ in 1970.
a. got married b. get married c. were getting married d. getting married
13. Yes, we ___ to the cinema, but not very often.
a. go b. goes c. are going d. don’t go
14. What ___? – He’s a doctor.
a. your father does b. your father does do c. does your father d. does your father do
15. What language ___ at the moment?
a. is she speaking b. she is speaking c. does she speak d. she speaks
16. Where is Jim? – He ___ in the garden.
a. working b. works c. work d. is working
17. How many newspapers ___ every day?
a. you buy b. do you buy c. are you buying d. you are buying
18. ___ to this part of the city before?
a. were you b. have you be c. have you been d. did you be
19. We ___ go to the cinema tomorrow.
a. goes b. went c. is going d. will
20. Mary ___ to a dance last Friday.
a. went b. was going c. has gone d. have gone
21. I ____ phone you next Friday.
a. did b. will c. does d. Have
22. ____ they go to the stadium a week ago?
a. was b. do c. did d. were
23. I ___ read this book yet.
a. hasn’t b. have c. will d. haven’t
1. Unexpected Tech Failure 5. Saving Time And Money
2. Military Use 6. Other Side of the Coin
3. World Without Drivers 7. Robotic Future
4. Health Benefits 8. Specialised Vehicles
A. Globally released worldwide, Microsoft Vista hit the markets in early 2007. Its ideology was to enhance the security system of the personal computer. But the security features weren't all that better than its previous versions', according to many software critics. Vista is also not compatible on all sorts of PC's and runs slower compared to Windows XP. All of this prevented Vista from being a better version and it never took off like the company had hoped.
B. A couple centuries ago, if you wanted to record a moment for posterity, you sat around for hours or days while someone painted it. Up until ten years ago, you were at the mercy of photo developers charging 20 cents or more to help preserve your memories. Now you can record countless images and store them electronically for all of eternity at virtually no cost per picture.
C. With technology advancing at the pace it is today, we have to believe that by the end of the century we won't be driving our cars around the city. Rather, we will just be sitting on the then historic driver's seat and doing some work. While the concept looks futuristic, industrial designer Kubik Petr believes that nothing seems impossible with modern technology at hand.
D. The Kenguru is designed only for the disabled. Previously car manufacturers would design cars for the disabled but not specifically for them. This Hungarian company is taking it to the next step, the disabled will be able to open the rear of the car and just roll in the driving position, secure their wheelchair — without never having to leave their chair.
E. Technology certainly offers us innumerable comforts within our world, especially when it comes to people who have extreme medical conditions and need the help of science and technology to live comfortably within their everyday lives. The creation of robot limbs allows a person to walk again. The introduction of synthetic body parts such as a heart pump can help a person to live longer.
F. Everyone knows that being a soldier is a dangerous job. Walking through minefields, deactivating unexploded bombs or clearing out hostile buildings, for example, are some of the riskiest tasks. What if we could send robots to do these jobs instead of humans? Then, if something went wrong, we'd only lose the money it cost to build the robot instead of losing a human life.
G. Cutting edge technologies offer the hope for a better world, bringing welcome solutions to everything from disease to environmental damage. But these same technologies can also bring danger by aiding criminals and terrorists, invading personal privacy and even potentially creating diseases and damaging the environment. The more powerful and pervasive technology becomes, the more dangerous it becomes as well.-
Предмет:
Английский язык -
Автор:
gustavoyma4 - 5 лет назад
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Ответов:
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