Question

Find the 85th term of the arithmetic sequence -25, -37, -49

Answer 1

This is a question of Geometric Sequence.

The given sequence is a Geometric sequence.

The sequence is

x,x^3/2,x^2,x^5/2

Here

The first term  =  a = x

    Common Ratio = r = (x^3/2) / x  = x^1/2

The nth term is

 =  

 =  

=  

=  

=  

So the 85th term is∛