How big pots i need so that plant gets enogh space till it reveals sex ?

I have around 40 sativa seedlings (one day old ) in a soil tray and i am planning to transplant them at my backyard in pots.. as per my calculation plants will get 10 hrs of direct sun and 3hrs of indirect light.
My question is " How big pot i need so that it will be enough for the plants TILL IT REVEALS SEX (male or female?) "

My plan is when they will reveal their sex i will kill all males and retransplant only best 10 females in 5 gallon pots..

Bros, how big pots i need ?

.5-1 gallon

Didn´t I just answer this in another thread??

I wish these noobs would NOT post the same question in multiple threads - then not bother to read answers in any of them.

You can use a small 4" pot that holds 1/4 liter..