1. What are the rules between them? What are the rules between them?

1. 2, 4, 6, 16, 18, 64, 54
If you look at every other item, the odd items 1, 4, 16 and 64 are the equal ratio series with 4 as the common ratio
Even terms 2, 6, 18 and 54 are equal ratio series with 3 as common ratio
6. 8,14,22,36
6+8=14,8+14=22,14+22=36

RELATED INFORMATIONS

1. According to 1 / 2 = 1 / 5 + 3 / 10, 1 / 3 = 1 / 7 + 4 / 21, 1 / 4 = 1 / 9 + 5 / 36, how to write 1 / 9 = 1 / () + 10 / (), 1 / 8 = 1 / () + 9 / (),
2. Simple calculation (- 98) * (- 0.125) + 98 * 1 / 8 * (- 4 / 7) (- 1 / 12-1 / 36 + 3 / 4-1 / 6) * (- 36) - 19 and 24 / 25 * (- 5)
3. The sum of the two addends is 98. One addend increases by 7.36 and the other decreases by 5.5. What is the sum?
4. (1) (- 1 / 12-1 / 36 + 3 / 4-1 / 6) * (- 48) (2) - 3 / 17 △ 3 * (17 / 5)) (3) - 5 ÷ (- 1 and 2 / 7) * 4 / 5 * (- 2 and 1 / 4) / 7 (4) - 2 of 13 * 3-0.34 * 2 of 7 + 1 of 3 * (- 13) - 5 of 7 * 0.34 (5) (- 1 / 6) / (2 / 3 1-3 / 3 2 + 1 / 15 4)
5. Given 1 + X + x ^ 2 + x ^ 3 = 0, find the value of X + x ^ 2 + x ^ 3 + x ^ 4 + x ^ 5 + x ^ 6 + x ^ 7 + x ^ 8 If not, how much?
6. （-7/12-5/6+9/8-3/4）x（--36）
7. (5-x)*3=(7-x)*2 x*（1-0.2）=145-x+8 x*6+x（1+0.1）*5=1518 9+x =(36+x)*0.4
8. 8 / x = 0.36 / 0.6
9. X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05 X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05
10. (x+8)(x+6)(x+7)+(x+5)(x+6)(x+7)=(x+5)(x+8)(x+7)+(x+5)(x+8)(x+6)
11. 1999! + 1 is prime or composite
12. Detailed explanation of number reasoning 78,38,18,10,4, () 78,38,18,10,4,() Four alternative answers 2,1,4,3
13. What's 18.38 N and 78.59 e
14. Find the rule: 0,1,6,7,12,13,18,19, (), ()
15. Find the rule: 4 / 3 1 8 / 9 () 4 / 5 How to fill in?
16. Find the rules 1,2,2,5,3,8, [], []
17. Find the rule 2, 3, 5? 8
18. Find the rules! 1,3,8,19,42 (), ()
19. In the one minute rope skipping competition, the average number of Xiaohong's two jumps is 130. To make the average number of three jumps 135, how many times should she jump for the third time?
20. In a one minute rope skipping competition, the scores of 12 students are as follows: 122.119.115.110.108.105.102.100.98.97.96.88, the median is 103.5 The average is 105. Why is the average larger than the median