Indias services sector experienced its strongest expansion in four months in October, as the HSBC India Services PMI Business Activity Index climbed to 55.8, driven by robust demand and easing cost pressures, according to a recent monthly survey.Illustration: Dominic Xavier/RediffKey PointsIndias services sector activity reached a four-month high in October, with the HSBC India Services PMI Business Activity Index rising to 55.8.