Of Sn denotes the sum of first n terms of an AP, prove that,S30=3(S20-

1.	Of Sn denotes the sum of first n terms of an AP, prove that,S30=3(S20-S10)
Answer» S30=3(S20-S10),S30=S60-S30S30=S30L. H. S=R.H.S

Discussion