Use 3-5, - 11, 7 to calculate 24 o'clock,

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• 1. Please use - 2, - 3,4,5 to calculate "24 points" Requirements: can use addition, subtraction, multiplication, division, power operation, each number with a time, as much as possible to write different is
• 2. 24 point algorithm Use addition, subtraction, multiplication, division and brackets to calculate 5,6,7,8 to 24, write the formula, which can not be repeated and can be mixed
• 3. 24:3.12.13
• 4. 2. How to make up the 24 points of negative 4, 8 and 11//
• 5. 24:1.34-6.10 two · - 3.57-11
• 6. Calculation: 3.6 × 42.3 × 3.75-12.5 × 0.423 × 28=______ ．
• 7. Simple calculation of 3.75 × 4.8 + 4.8 × 6.25
• 8. The difference between 2 / 7 and 3 / 8 is that () is different
• 9. 18 out of 24 = 1 out of 6? It is required to answer before the evening of January 4, 2010!
• 10. 9 / 24 = 3 / 8 = 12 / 32 = (?) divided by 4
• 11. -2,3,5,7 constitute 24 points for help;
• 12. 12 3 - 13 - 4 is 24 points
• 13. How much is 50 grams?
• 14. How do you write this question;? —Why don't you drive there? —Because our gasoline has been____ . A.gone out B.put up C.give up D.uesd up
• 15. How many kilometers is 191 kilometers
• 16. How to simplify the problem of 15 × 19 of 23 + 19 × 8 of 23?
• 17. 23 / 25 + 23 / 25 * 24 = (those that can be easily calculated can be easily calculated
• 18. Given the function f (x) = 1 + 1 / 2 of X (1) judge the odd even number of F (x): (2) determine whether the function f (x) is an increasing function on "(- OO, 0) Is it a decreasing function? Prove your conclusion
• 19. Judge the odd and even numbers of the following functions: (1) f (x) = x (2) f (x) = 1 / 2 of the quadratic power of X (3) f (x) = - 3 + 1 (4) f (x) = - 3x's quadratic power + 2
• 20. If 3-2x out of 4 and 5x-6 out of 7 are opposite to each other, what is x = then?