<prompt> Male to Female ratio isMales for 1000 popultaionFemales for 1000 malesMales for 1000 femalesFemales for 100 males  <response>: The number of females per 1000 males is known as sex ratio Sex composition is one of the basic demographic characteristic of the population Reference : Park;s textbook of preventive and social medicine, 23rd edition, Page no: 482 