Question

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The sum of first 6 terms of an ap is 57 and the sum of first 10 terms 155 find the algebraic form of this AP​

Answer 1

Answer:

Given a=2,l=9 and S=155

S=

2

n

(a+l)

155=

2

n

(2+29)

⇒n=10

l=a+(n−1)d

29=2+(10−1)d

⇒d=3

So the common difference is 3

Step-by-step explanation:

it is simral sum I hope it helps you please mark me as Brainlist and do follow