Q. 205.0( 2 Votes )

Which term of the AP 72, 63, 54, ... is 0?
A. 8th

B. 9th

C. 10th

D. 11th

Answer :

In the given AP, the first term = a = 72


Common difference = d = 63 - 72 = - 9


To find: place of the term 0.


So, let an = 0


Since, we know that


an = a + (n - 1) × d


0 = 72 + (n - 1) × (-9)


- 72 = - 9n + 9


- 72 - 9 = - 9n


- 9n = - 81


n = 9


9th term of the AP is - 81.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | Arithmetic Progression34 mins
Champ Quiz | Arithmetic Progression30 mins
Lets Check Your Knowledge in A.P.49 mins
Arithmetic progression: Previous Year NTSE Questions34 mins
Quiz on Arithmetic Progression Quiz32 mins
Arithmetic Progression Tricks and QUIZ37 mins
Quiz | Group of Questions on General Term of an A.P49 mins
Become a Master of A.P. in 45 Minutes!!47 mins
Get to Know About Geometric Progression41 mins
NCERT | Solving Questions on Introduction of A.P42 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses