Test my Merit My Results Create Exam

Sequences and Series | Geometric Progressions

What is the nth term of the sequence 25, -125, 625, -3125, …….?
The sum to infinity of a geometric progression is 39/2. The sum to infinity to squares of the terms of the geometric progression is 253.5. What is the sum to infinity of cubes of the terms of the geometric progression?
If 3rd, 8th and 13th terms of a GP are p, q and r respectively, then which one of the following is correct?
How many terms are there in the following sequences? 1, 2, 4, 8, ..,...............,., 4096
For what possible value of x are the numbers (x + 9), (x - 6) and 4 in GP?
For what possible value of x are the numbers - 2/7, x, - 7/2 are in a GP ?
The ratio of 4th term and 7th term of G.P. is 8 : 27. What is the common ratio of the G.P.?
If 5, x, y, z, 80 are in GP then what is the value of x, y, and z?
Ads