Question

You are given the following series. Determine the value of X.
Series
1 1
-, 1, X,9
9 3
N​

Answer 1

Answer:

1221

Step-by-step explanation:

mark me as a braillist pls i am begging you to do that

Answer 2

Answer:

A series in which each term is formed by multiplying the corresponding terms of an A.P. and G.P. is called Arithmetico Geometric series. It is more popularly known as an A.G.P.

The general or standard form of such a series is a, (a +d) r, (a +2 d) r2 and so on.

Sum of infinite number of terms of an A.G.P with |r| < 1 is

S∞ =

Where,

a = first term

d = common difference of A.P.

r = common ratio of G.P.