Qualification > Math

statistics

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NotAbod:
Welcome back fidato :D

SkyPilotage:
Hmm i think its 1-0.28-0.3!!= 0.42
Because if he doesnt win both games he can either lose both or win only one ....

NotAbod:
he can:
win both
lose both
win first, lose second
lose first, win second

SkyPilotage:

--- Quote from: AboD on May 03, 2011, 12:27:19 pm ---he can:
win both
lose both
win first, lose second
lose first, win second

--- End quote ---
You are perfectly right, however the probability 0.3 is the probablity he wins EXACTLY one game and not the probablity to win any game.
Did you get what I mean?

NotAbod:
true. winning one game can be found by:
[probability of losing x probability of winning] + [probability of winning x probability of losing]
he can win the second or first

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