The least common multiple of two composite numbers of Coprime is 702, which are (), ()

27 and 26

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1. When was the world's first electronic computer born? How many years has it been?
2. Two coprime numbers whose least common multiple is 702 are______ ．
3. On the application and function of calculator Choose any three digit number (requirement: the number of hundreds is at least 2 times larger than the number of ones), invert the order of the number of hundreds, tens and ones to get another three digit number, subtract the smaller three digit number from the larger three digit number, invert the order of the numbers of the difference to get another three digit number, and add the difference itself to the three digit number, What's the result you got? Try a few more numbers. What do you find? Choose any four digits and follow the rules above. What will you get? What if you choose any five digit number Select any positive number and perform the following operations: add L, then take the reciprocal, and continuously perform the above operations according to the obtained results What did you find? If you change the operation rules (such as "add 2, then take the reciprocal..." Square plus one, then square and take the reciprocal "...) Will we find a similar pattern? With the help of your calculator, get the cycle section separately If a number key (such as 3) on the calculator is broken, how to calculate the formula containing the number? (such as 2 + 3, 34 12, 3 × 49325413,...) What if an operator key is broken? The problem in brackets is 2 + 3,34-12,3 × 49325 △ 413
4. (1) Two composite numbers are coprime, and their least common multiple is 144. These two numbers are () and () (2) The volume of the new cylinder is () cubic decimeter and the surface area is () square decimeter
5. Research with calculator (1) Take any number greater than 1, square the positive square root, and then square it. If his square root operation continues, what number is the result close to? (2) Take any number that is less than 1 and greater than 0, square the positive square root, and then square it. If his square root operation continues, what number will the result be close to? (3) Think about it from the angle of inverse operation of square root, that is, square, can you tell the truth?
6. Given that two numbers are coprime, their least common multiple is 90. These two numbers can be () and () or () and ()
7. A commodity is priced at 40% higher than the cost, and then sold at a 20% discount. As a result, it earns 36 yuan. How much is the cost of this commodity?
8. The least common multiple of two coprime numbers is 315
9. A commodity is priced at 38% of the profit. After 40% is sold, the price is reduced. When all the commodities are sold out, the total profit is 29.72%（ What percentage of the reduction
10. There are two numbers that are coprime numbers and composite numbers. Their least common multiple is 90. These two numbers are () A. 9 and 10B. 2 and 45C. 6 and 15d. 5 and 18
11. The world's first electronic computer was born in（ A) Mid 1940s B) The 19th century C) Early 1980s D) 1950
12. Two coprime numbers whose least common multiple is 702 are______ ．
13. The first electronic computer in the world is called?
14. Two composite numbers of Coprime whose least common multiple is 702 are () and () kuai
15. The first electronic computer in the world
16. Least common multiple of 54 and 27 Come on. Use it now
17. The characteristics, composition and functions of computer network
18. What is the greatest common factor of 18 and 54______ The least common multiple is______ ．
19. Early computer networks were made up of () Options: a. Computer communication line computer b. PC communication line PC c. Terminal communication line terminal d. Computer communication line terminal
20. The least common multiple of 17 and 54, 10 and 45