Mix gatherings mean those meetings where people talk and mingle freely, such as an event or a party, class environment for students and so on.This does not mean a restaurant where people go to eat to separate tables, or walking down the street, or going in a bus perhaps. And in the present context there is no such thing as the necessity of a mix gathering to save your life.

 Ive done a lot of research on this topic.. And it turned out that all  the people of knowledge i asked said it is haram.. How is this  prohibition to be understood… Is there any clear cut evidence from quran or sunnah prohibiting this? What about public places.. Necessity is a last resort when u have nothing else to eat in the desert and u have pig.. So u eat just enough por to survive.. The stand