Probability

Let E and F be events in a sample space where
P(E)=0.70, P(F)=0.40, P(EFc)=0.45P\left(E\right)=0.70,\ P\left(F\right)=0.40,\ P\left(E\cap F^c\right)=0.45
Determine P(EcFc)P\left(E^c\cap F^c\right)

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