The sum of n.2n,3n terms of an ap are s1,s2,s3 respectively prove that – InterviewSolution

1.	The sum of n.2n,3n terms of an ap are s1,s2,s3 respectively prove that s3=3(s2-s1)
Answer» -STEP EXPLANATION:SUM of n=s1=1 sum of 2n=s2=2sum of 3n=s3=3s3=3(s2-s1) 3=3(2-1)3=3*13=3LHS =RHSHence PROVED

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