How long does it take to drown?

how long before the body dies from drowning any one know this

four minutes.
]:

what the f*ck.. about 5 to 4min depending if you don't know how to swim

Well you are considered dead if you are under for 10 minutes but usually people who are under water for 6 minutes only have extensive brain damage if they can be given mouth to mouth and live.

hmm I thought the brain couldn't live without oxygen for 3 min's :/