Q. Sex-ratio is calculated as : (Solved)
1. No. of children per 1,000 people in a Country.
2. No. of males per 1,000 females in a Country.
3. No. of females per 1,000 males in a Country.
4. No. of people per 1,000 children in a Country.
- c. No. of females per 1,000 males in a Country.