Question

tell me all properties of ap series please....☺​

Answer 1

Answer:

Step-by-step explanation:

b = a+c/2 condition for in AP

An=a+(n-1)d general equation

Sn=n/2(2a+(n-1)d) for sum of AP

Sn=n/2(a+l) if last term is given

( l = last term)

Answer 2

Answer:

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