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If P(E) = 0.45, what is the probability of 'not E'?

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0.50

0.55

0.45

1.0

answer is B.

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Detailed Solution

Given: P(E) = 0.45

As we know,

P(E) + P(not E) = 1

⇒ 0.45 + P(not E) = 1

⇒ P(not E) = 1 − 0.45

⇒ P(not E) = 0.55

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