Number of births per thousand people in the population is expressed as

At the time of independence,our population was approximately ........... billion,which reached near ............ billion in the year $2000$ and crossed ........... billion in $2011$.

The population of India in the early $21$st century was approximately: (in $crore$)

At present,the total population of the world is about:

The total population of the world by the end of the $20^{th}$ century reached approximately:

Statement $1$: One in every six persons in the world is an Indian.
Statement $2$: In India,there are more females than males.