20 Q20. Let a , b , c , d be in GP , then show that (a – b)2 , (b – c)2 , (c – d)2 are in GP. Share with your friends Share 1 Neha Sethi answered this Dear student Now the sequence a-b2,b-c2,c-d2 can be shown in GP when RHS=r2So, LHS=RHSSo terms are in GP Regards 0 View Full Answer