What is Sex Ratio?
Male to female, number of each sex. If you have 25 woman in a building and you have 5 men in the same building, then the ratio is 5 woman to 1 man sex ratio or 5:1 ratio.
Beats me! I'd like to know too.
Its depend upon number of male and female.
It's same as gender ratio. It has nothing to do with "sex activity."