Question

please answer this question I will mark you as brainliest and if you don't know the answer don't write anything​

Answer 1

Answer:

Problem is solved in the attachment

Mark it as brainliest

Answer 2

Answer:

N=S ,S2=2N,S3=3N

Step-by-step explanation

S3=(S2-S1) =3(2N-N)=3N