" I know none of them" means "-----------------"

" I know none of them" means "-----------------" none of them every means ___tired to solve theproblem,but none of them wo all of them,none of them... none of them / every student l have none of them But I know none of the people here except you. I' DON'T KNOW!IT NONE OF YOU BUSINISS i don't know all of them I do not know any of them? I don't know any of them 请问none of them等于_____of them?