Maths / Arithmetic Progression / Finding The Value of N When Nth Term and AP is Given

QUESTION
 

Which term of the AP:-16,-11, -6,-1,........ is 59?

EXPLANATION
Explain TypeExplanation Content
Text

   APis -16,-11, -6,-1-----

large a= -16, ; d= -11-(-16)= -11+16 = 5

large a_n= a+ (n-1)d

large 59= -16+ (n-1)5

large 59= -16+ 5n-5 = -21+5n

large 5n=59+21= 80

large n=frac{80}{5}= 16

View Contents
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)
Self Learning
Testimonials
No Preview
Student Feedback on Methodology - Shreya Shrivastava C/o ABHYAS Academy
 8th
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Back
Courses We Offer
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)