bonjour
p ( E ∪ F) = P ( E ) + P ( F) - P ( E ∩ F)
= 0.31 + 0.54 - 0.18 = 0.67
P (V) = 0.9 - 0.5 = 0 .4
P (non V) = 1 - 0.4 = 0.6
p (Non U ∩ non V) = 1 - 0.3 = 0.7
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bonjour
p ( E ∪ F) = P ( E ) + P ( F) - P ( E ∩ F)
= 0.31 + 0.54 - 0.18 = 0.67
P (V) = 0.9 - 0.5 = 0 .4
P (non V) = 1 - 0.4 = 0.6
p (Non U ∩ non V) = 1 - 0.3 = 0.7