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If E(1),E(2),E(3) and E(4) are the four ...

If `E_(1),E_(2),E_(3)` and `E_(4)` are the four elementary outcomes in a sample space and `P(E_(1))=0.1,P(E_(2))=0.5,P(E_(3))=0.1`, then the probability of `E_(4)` is ……….

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