Real and reel life 'Paa': Amitabh Bachchan meets kid with progeria on sets of Kaun Banega Crorepati

It was like any other day on the sets of Kaun Banega Crorepati. After the usual shoot of the Q&A, Amitabh Bachchan was taken aback when he met the 13-year-old Shreyash Barmate.