Answer :

Here, sp = ap2 + bp

S1= a + b


S2= ax22 + bx2


=4a + 2b


S2 = a1 + a2


4a + 2b = a1 + a2


A2 = 4a + 2b – (a + b)


A2 = 3a + b


Now, d = common difference = a2 – a1


= 3a + b – (a + b)


= 2a


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Arithmetic Progression- Don't miss these QuestionsArithmetic Progression- Don't miss these QuestionsArithmetic Progression- Don't miss these Questions56 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
caricature
view all courses