Consider the geometric sequence 2, 2√2, 4, 4√2,

Question

1) What is the common ratio, r?

2) Find the 10th term in the sequence

Answer 1

The sequnce 2 , 2√2, 4 , 4√2

1) common ratio

2) To find 10 th term in the sequence

n th term in geometric sequence

a  = first term = 2 , n  = 10.

Substitute the above values in n th term

10 term in the sequence  .