Known arithmetic sequence 2,5,8,11. Which term is 599?
General term formula
A[N] = 3N - 1
Substitution value:
3N - 1 = 599
The solution is n = 200
Item 200 is 599
RELATED INFORMATIONS
- 1. If two arithmetic sequences 5,8,11. And 3,7,11. Have 100 terms, how many of them are the same
- 2. Given that the first term of an arithmetic sequence is - 20 and the 50th term is 120, find the sum of its first 50 terms?
- 3. If the sum of the first n terms of the arithmetic sequence {an} is Sn, and S4 = 20, sn-4 = 60, Sn = 120, then n=______ .
- 4. Given that the sum of the first five items of an arithmetic sequence is 120, the sum of the last five items is 180, and the sum of each item is 360, how many items are there in this sequence
- 5. In known arithmetic sequence an, the sum of the first 30 items is 50, and the sum of the first 50 items is 30, then the sum of the first 80 items is
- 6. From the set {1, 2, 3 , 20} and make the three numbers into an increasing arithmetic sequence, then the sequence has the same number______ Group
- 7. Choose three different numbers from 1,2,3... 20, and make these three numbers into arithmetic sequence. How many pairs of arithmetic sequence are there?
- 8. Will 1, 2 If the nine numbers are divided into three groups averagely, the probability that the three numbers in each group can form an arithmetic sequence is () A. 156B. 170C. 1336D. 1420
- 9. Insert three numbers between 20 and 70, so that these five numbers become arithmetic sequence. What are the three numbers inserted?
- 10. From 1, 2, 3 How many different arithmetic sequences are there if you take any three different numbers from the 20 numbers of, 20 to form the arithmetic sequence
- 11. If the sixth term of an arithmetic sequence is 5 and the sum of the third term and the eighth term is 5, then the sum of the first nine terms of the arithmetic sequence is 5______ .
- 12. It is known that the third term of the arithmetic sequence [an] is 5, the eighth term is 20, and the 25th term? N is written at the bottom right of a!
- 13. If the sixth term of an arithmetic sequence is 5 and the sum of the third term and the eighth term is 5, then the fifth term of the arithmetic sequence is 5
- 14. It is known that three numbers form an arithmetic sequence, the sum of which is equal to 15 and the sum of squares is equal to 107
- 15. The sum of three numbers is 15 and the sum of their squares is 83
- 16. If three numbers form an arithmetic sequence, the sum is 15 and the sum of squares is 83, find the three numbers
- 17. The sum of the three numbers is equal to 15 and the sum of the squares is equal to 83
- 18. Three numbers are known to form an arithmetic sequence. Their sum is 18 and their sum of squares is 126. Find these three numbers
- 19. It is known that 1 of a, 1 of B and 1 of C are equal difference sequence. It is proved that B + C of a, a + C of B and a + B of C are equal difference sequence
- 20. Three numbers are known to form an arithmetic sequence, their sum is 12, and their product is 60