किस यात्री ने मुगलकाल में पटना की जनसँख्या दो लाख बताई है ? - Which traveler has given the population of Patna as two lakh during the Mughal period? - Kis Yatri ne MugalKaal Me Patana Ki Jansankhya Do Lakh Batayi Hai ? Bihar Gk in hindi, Bihar Modern History Quiz Mainrik question answers in hindi pdf peterMundi questions in hindi, Know About John Marshal Bihar Gk online test Bihar Gk notes in hindi quiz book Taiverniye