1st and last are male, 2nd looks like female i see a white hair their but still not sure, and 3rd not sure to early give it another day or two, but if your plant has those little sacks on it like in your last pic its male, if it just has white hairs coming off it its female
first and last are totally male, can not tell on the others quite yet! I think I see pistols on the top part of the second picture but it is a little out of focus.
^^ yea first and last are males second pic is female i can see pistils and 3rd isnt showing preflower