1,-3,5,-7,9,11,-13…… What is the 100th number in this column?

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• 1. The following set of numbers are arranged in regular order: 1, 2, 4, 8, 16. The 2014 number is ()
• 2. The following set of numbers in regular order: 1, 2, 4, 8, 16. What should the number 2014 be?
• 3. 2. 10, 4, 8, 8, 6, 16, 4, (), ()
• 4. 3.5.6.10.9.15 () ()
• 5. 4. What are the laws of 3, 2, 6, 6, 3, 8, 12, 5, 10, (), 7
• 6. Find the rule: 2, - 4.6, - 8.10, - 12.14, - 16, (), ()
• 7. Find the rule 2,2,4,12,48, ()
• 8. 8,5.4,2.7, () 1.12,2.24,4.48, () 10,4,1.6, () how to fill in?
• 9. 1 + 3 = 2 / 2 (1 + 3) * 2,1 + 3 + 5 = 2 / 2 (1 + 5) * 3,1 + 3 + 5 + 7 = 2 / 2 (1 + 7) * 4,1 + 3 + 5 + 7 + 9 = 2 / 2 (1 + 9) * 5 1 + 3 = 2 (1 + 3) * 2,1 + 3 + 5 = 2 (1 + 5) * 3,1 + 3 + 5 + 7 = 2 (1 + 7) * 4,1 + 3 + 5 + 7 + 9 = 2 (1 + 9) * 5, fill in the blanks according to the rule: 1 + 3 + 5 + 7 + ···· + 99 = () fast!
• 10. Fill in the blanks according to the rules Two out of seven, three out of nine, four out of eleven 2 out of 1, 4 out of 4, 6 out of 9, 8 out of 16, [], [], 14 out of 49
• 11. A column number 1, negative 3,5, negative 7,9, negative 11,13, then what is the 100th number in the column number?
• 12. One column number 1, - 3,5, - 7,9,11, - 13 What is the 100th number in the tree? Better have a process! thank you
• 13. If there is a column number: 1 / 3, 1 / 2, 5 / 9, 7 / 12, 3 / 5, 11 / 18, 13 / 21, then the 2008 score is ()
• 14. Regular filling: 9 4.5 2.25 () ()
• 15. Find the law - 1 / 2,2 / 5, - 3 / 10,4 / 17, Give me rules
• 16. - 1 / 2.2/5. - 3 / 10.4/17
• 17. Let f (x) be a parabola, and when the point (x, y) is on the parabola image, the point (x, y ^ 2 + 1) is on the image of the function g (x) = f (f (x)), the analytic expression of G (x) is obtained Given (x-1) f ((x + 1) / (x-1)) + F (x) = x, where x ≠ 1, find the analytic expression of the function
• 18. How many horsepower is 1kW per liter
• 19. The symbol of area in Physics
• 20. The ratio of the resistance value of the two resistors is 1:2. If they are connected to the circuit in series, the ratio of voltage is? The ratio of electric power is? The ratio of electricians in the same time? In parallel