Open In App
Related Articles

Aptitude | Arithmetic Aptitude 4 | Question 2

Improve Article
Save Article
Like Article

How many terms are there in 3,9,27,81……..531441?

(A) 25
(B) 12
(C) 13
(D) 14

Answer: (B)


3, 9, 27, 81..............531441 form a G.P. 
with a = 3 and r = 9/3 = 3
Let the number of terms be n

According to the formula,

Nth term of the G.P is represented as Tn = a x rn-1

Then 3 x 3n-1 = 531441
∴ 3n = 312
∴ n = 12

Quiz of this Question

Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out - check it out now!

Last Updated : 16 May, 2019
Like Article
Save Article
Similar Reads