Male to Female ratio is
Males for 1000 popultaion
Females for 1000 males
Males for 1000 females
Females for 100 males
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
Demography and family planning