find the sum of the 20th term a=6 and r=2/3

Similar Questions

1. 1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the
   1. 4 answers
2. Write a possible explicit rule for the nth term of the sequence, then use it to find the 20th term.5, -10, 20, -40, 80, -160....
   1. 1 answer
3. The 8th term of a linear sequence is 18th and the 12th term is 26th .find the first term,common difference and the 20th term
   1. 2 answers
4. The eighth term of a linear sequence is 18 and twelveth term is 26.Find the first term,common difference and 20th term
   1. 3 answers

more similar questions