Open In App
Related Articles

Aptitude | Progressions | Question 7

Improve
Improve
Improve
Like Article
Like
Save Article
Save
Report issue
Report

Find the sum of series: 1, 3, 9, 27, 81, …………..39

(A)

[(1-3^(10))]/(1-3)

(B)

18

(C)

10

(D)

20



Answer: (A)

Explanation:

Sol: Sn=[a(1-rn)]/(1-r) =[1(1-310)]/(1-3) =[(1-310)]/(1-3)



Quiz of this Question
Please comment below if you find anything wrong in the above post

Last Updated : 16 Sep, 2021
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads