2、6、18、54、()、()
2、6、18、54、(162)、( 486)
4 12 36 108 324 the difference is three times of the former
RELATED INFORMATIONS
- 1. 9、18、54、5、10、30、7、()、()
- 2. Find the rules, 18, 9, 10, 5, 6, 3, (), (). What do you fill in the brackets? Find the rules, 18, 9, 10, 5, 6, 3, (), (). What do you fill in the brackets?
- 3. Fill in the blanks: 18,9, () 4.5 3.6
- 4. 486162,54, (), (), 25,5,10,30120, () () 25200 486,162,54,(),(),2 5,5,10,30,120,()()25200 Find the law
- 5. Fill in the figures according to the regulations (1)(),2,3,6,5,10,7,(); (2)40,20,(),5; (3) 1,2,4,5,7,8,10,(),().
- 6. First find out the rules, then fill in the numbers (1)1,1.1,1.3,1.6,( ),( ),3.1,( ).
- 7. Fill in the numbers according to the regulations: 1 / 4, 4 / 9, (), 16 / 25, ()
- 8. Fill in 6.25 2.5 1 () () 0.064 In a hurry
- 9. To be flexible, a little bit difficult, but the calculation to calculate the point, as long as the choice and fill in the blanks, the teacher asked me to give a question in the class meeting to the students We have learned that the quadratic equation of one variable, one variable, one variable and one variable can be expressed
- 10. Set up equations or equations to solve application problems: both a and B robots are used to carry chemical raw materials. Type a robot carries 30kg more per hour than type B robot. It takes the same time for type a robot to carry 900kg and type B robot to carry 600kg. How much chemical raw materials do the two robots carry per hour?
- 11. In order to know A2 = 6, A5 = 162 in the equal ratio sequence {an}, find the first n terms and Sn of the sequence {an}
- 12. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162. (1) find the general term formula of the sequence {an}; (2) let Sn be the sum of the first n terms of the sequence {an}, and prove that Sn · SN + 2s2n + 1 ≤ 1
- 13. In the known equal ratio sequence {an}, A2 = 6, A5 = 162, find the first n terms and Sn of the sequence {an}
- 14. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162 (1) find the general term formula of the sequence {an} (2) if the first term n and Sn of the sequence {an} are more than 50, find the minimum value of n
- 15. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162, An = 2 * 3 ^ (n-1), if Sn = 242
- 16. General term formula of sequence 1 / 2,2 / 5,1 / 3,2 / 7
- 17. A general term formula sequence 2, - 6,18, - 54. A general term formula
- 18. What is the general term formula of sequence 1 / 2, - 1 / 2,5 / 18, - 7 / 54
- 19. The general term formula of 2,6,18,54 series?
- 20. The law of the number in this column is that the second number is one more than the first number, and the third number is one more than the second number More than 2 and so on. What is the remainder of the 1996 number divided by 5 It's also a process,