Question

the sum to the infinity of the following G.P exist, where a=9 , r=0.9​

Answer 1

Answer:

90 ans.

Step-by-step explanation:

here a= 9 & r= 0.9

since |r| = |0.9| = 0.9 < 1 the sum to infinity of this GP exist and

S = a / 1 - r

S = 9/ 1 - 0.9

S = 9/ 0.1

S = 90 ans.