$begingroup$ For (a), a simple way to take a look at is that you've decreased your chance space to only the combinations which have at least a single boy: From safe access controls to Local community-constructing initiatives, we attempt to produce Risk-free and inclusive Areas where Girls can thrive. Working https://pgingurgaonforfemale.design.blog/2025/07/28/find-your-ideal-pg-in-sector-14-gurgaon-with-osmstays/