can i sit for RBI PO with 53.2% in cls 12 & 53.33% in graduation

According to the 2015 notification, minimum marks for general category students in graduation and 10th/12th is 60%. The same criteria for SC/ST/PWD is 50%. You can find more info here: https://opportunities.rbi.org.in/Scripts/bs_viewcontent.aspx?Id=3082

The notification for 2016 is awaited.