123456 equals six For example, 1 2 3 4 5 6 = 6. The rule is: you can only use addition, subtraction, multiplication and division,

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• 1. Sixth grade simple arithmetic 654321 * 123456-654322 * 123455
• 2. 123456+234561+345612+456123+561234+612345．
• 3. Matrix times transpose matrix equals identity matrix What are the characteristics of this matrix
• 4. The transpose of α multiplied by β is not equal to 0. Let a = transpose of α multiplied by β - E and satisfy the equation a ^ 2-3a = 4E, then what is the transpose of α multiplied by β
• 5. There are seven numbers, which are arranged from left to right in the order of small to large. The sum of these seven numbers is 258.6, of which the average of the first four numbers is 58.5, and the last four numbers are 58.5 The average is 18.4. What's the median of this set of data?
• 6. Nine palace grid with the number 1 ~ 9 to solve 81 Palace, the following is the picture ah! (I want to fill in one...) (I want to fill in two...) (and so on) (5) 435 8514~76~9 51~863
• 7. The nine palace grid uses the numbers 1 to 9 to solve the 81 Palace. Here is a picture Please boss. I'm dizzy If there's a solution, Of course, the following must be solved first! Please arrange it according to my number. It's 81 palaces in total! The one with large space spacing is one grid, with a total of 9 grids and 81 palaces! (all numbers 1-9) It's all connected! Not just one of them! 1*3 *** 6** **5 *3* *** *** *49 *35 3** 4** 8** *** 8** **3 7*9 **2 **1 *** *** 9** 8*7 9** **2 9** 7*5 *1* Please calculate according to my above arrangement! Maybe my arrangement is not good enough. But I'm still bothering you! The three separated paragraphs should all be connected!
• 8. Solving a nine palace grid problem - - - 8 - 4 - - - 1 - - 5 - - 3 4 - - - - - - 7 2 5 - 3 - - - - - - 6 - 8 - 9 - - - 4 - 2 - 2 - - - - - - 5 - 9 3 4 - - - - - - 7 4 - - 8 - - 3 - - - 7 - 2 - - -
• 9. Solution of nine palace lattice -2, - 4, - 6, - 10, - 8,0,2,4,6, how to fill in the nine square
• 10. What's the solution to 49 and 9 / 21 + (- 78.12) + 27 and 2 / 21 + (- 21.79)
• 11. It is known that a × B × AB / = BBB /, where a and B are numbers from 1 to 9, AB / means that the individual digit is B, the ten digit is two digits of a, BBB / means that the individual digit, the ten digit and the hundred digit are three digits of B, then a = (), B = ()
• 12. In the formula of a * b * AB = BBB, A. B means two different numbers, AB is two digits, BBB is three digits, then a =, B =
• 13. A and B represent two different numbers respectively. AB is a two digit number and BBB is a three digit number. If a * b * AB = BBB holds, then a = (), B = () I need it very much. Thank you. Please hurry up
• 14. How is a × B × AB = BBB calculated AB are two different numbers
• 15. How many days is 168:00?
• 16. The equation of the first grade of junior high school is transformed from 2x-7 = 4x + 5 to - 2x = 12
• 17. Verify the equation ∫ cos 2xdx = 1 / 2 sin 2x + C
• 18. Can the following equations hold? Why? (1) 2cosx = 3 (2) sin ^ 2x0.5
• 19. 2X + 7 = 8 and 2-4 / 3x = 4 are solved by the properties of the equation and tested
• 20. Use the ladder equation to calculate. 5 / 6 plus 2 / 3 is multiplied by 6 / 7, 5 / 12 plus 3 / 16 is multiplied by 3 / 8, 7 / 8 minus 2 / 7 is divided by 11 / 18