500, 250, 166 and 2 / 3, (), 100, 83 and 1 / 3

The first 500 / 1. The second 500 / 2. The third 500 / 3. And so on

RELATED INFORMATIONS

1. 1,2 of 1,2 of 3,2, find the law
2. 1+2+3…… +99+100+99+…… +3 + 2 + 1 =? Find the law and work out the result
3. Observe the following formulas: 1 + 2 + 1 = 4, 1 + 2 + 3 + 2 + 1 = 9, 1 + 2 + 3 + 4 + 3 + 2 + 1 = 16, 1 + 2 + 3 + 4 + 5 + 4 + 3 + 2 + 1 = 25 According to the rule you found, please write the result of the following formula directly: 1 + 2 + 3 + +99+100+99+… +3+2+1=______ ．
4. 1 + 2 + 1 = 4,1 + 2 + 3 + 2 + 1 = 9,1 + 2 + 3 + 4 + 3 + 2 + 1 = 16, calculate (1) 1 + 2 + 3 + +99+100＝?
5. ）Square of 1 + 2 + 1 = 2 = 4, square of 1 + 2 + 3 + 2 + 1 = 3 = 9, square of 1 + 2 + 3 + 4 + 3 + 2 + 1 = 4 = 16, find 1 + 2 + 3 +... + 99 + 100 + 99 +... + 3 + 2 + 1=
6. Calculate the value of 2 ^ 99 + 2 ^ 98 + 2 ^ 97 +... + 2 + 1? You can help me solve the problem: Calculate: 3 ^ 99 + 3 ^ 98 + 3 ^ 97 +... + 3 + 1? Calculate (x-1) according to the above rule (x ^ 99 + x ^ 98 + x ^ 97 +... + X + 1) thank you... I'm in trouble---
7. 1. Calculate 100 × 99-99 × 98 + 98 × 97-97 × 96 + ＋4×3－3×2＋2×1＝（）. 2. Xiaoqiang takes part in the "2010 Chen Shengshen mathematics week" activity from the walking path examination room at home. If he walks 50 meters per minute, he will be late To 3 minutes, if you walk 60 meters per minute, you can get to the examination room 2 minutes in advance. So the distance from Xiaoqiang's home to school It's () meters
8. 0.125 times 32 times 25! Simple calculation!
9. 32 times 125 simple operation, first come first served!
10. 468 * 1001 simple calculation
11. (-1+1/2)*(-1+1/3).*(-1+1/100)
12. 1 + 2 + 3 +. + 100 = how much
13. 1+2+2+3+3+3+4+4+4+4+.+100+100+100.
14. Look at the picture, find the rule, fill in the number at the question mark, why?
15. Planning cost method, material cost variance rate calculation Suppose a company has 10 tons of materials in stock at the beginning of the period, the planned cost is 17800 yuan, and the material cost difference is 250 yuan; the total cost of purchasing 10 tons of materials this month is 17600 yuan The difference rate of material cost in this month is as follows: (250-200)/(17800+17800)*100%=0.14% The above is an example Is the molecule (250-200) and why not (250 + 200)?
16. 17 cm = () m, using scientific notation, using a simpler method
17. 1 and 2 are represented by scientific notation, 3, 4, 5 are calculated and the results are represented by scientific notation (1)20X50= (2) 2 to the 10th power multiplied by 5 to the 11th power= (3) (1.2 × 10 to the fifth power) × (5 × 10 to the square)= (4) The square of 25 is the fourth power of 4= (5) The square of 3 × the sixth power of 2 × the eighth power of 5=
18. Calculating 1024 * 1024 with scientific counting method
19. The algorithm of scientific notation? For example, how to multiply the - 10th power of 1.63 * 10 by the - 9th power of 2.55 * 10?
20. What's the formula for compound interest? For example, if 100000 yuan is calculated at an annual rate of 12%, how much will it be after ten years?