Answer :
If three terms a1, a2 and a3 are in AP then
a3 – a2 = a2 – a1
⇒ a1 + a3 = 2a2
⇒ 3k – 2 + k + 2 = 2(4k – 6)
⇒ 4k = 8k – 12
⇒ 4k = 12
⇒ k = 3
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
