Sequences

The following are arithmetic sequence EXCEPT

Which of the following sequences has a common ratio of 2?

The sum of the first 5 terms of the sequence 9, 3, 1,  $$\frac{1}{3}$$   ,....is

Which term of the arithmetic sequence 4, 1 , -2, -5, -8,...is -14?

A sequence where each term after the first is obtained by adding a constant called the common difference.

Find the common difference of the arithmetic sequence with a₄=10 and a₁₁=45.

How many terms are there in an arithmetic sequence with d=4 and with first and last terms 3 and 59, respectively?

What is the common ratio in the given geometric sequence 8, 4, 2, 1, ...?

What is the tenth term of the geometric sequence 8, 4, 2, 1,....?

What is the sum of odd integers from 1 to 100?

What is the arithmetic mean between 11 and 19?

What is the next term in the geometric sequence 3, -9, 27......?

Find the sum of the first 4 terms of the geometric sequence with first term 40 and common ratio $$\frac{1}{2}$$   .

What is the third term of the sequence whose nth term is  $$a_n=\frac{n^2-1}{n^2+1}$$    ?

Which of the following is the sum of all multiples of 3 from 15 to 48?

What is the 4^th term of geometric sequence if the 2^nd term is 1 and the 6^th term 256?

What is the nth term of the arithmetic sequence 7, 9, 11, 13, 15, 17,…?

What is the sum of the infinite geometric series  $$\frac{3}{4}-\frac{9}{16}+\frac{27}{64}-\frac{81}{256},....$$  ?

Find the sum of all odd integers between 8 and 26