The probability that it will rain tomorrow is 0.25. What is the probability that it will not rain tomorrow?

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0.65

0.70

0.75

0.60

answer is C.

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Detailed Solution

It is given that,
The probability that tomorrow will rain, P(E) = 0.25.
Let, E = Event that it will rain tomorrow and E' = Event that it will not rain tomorrow.
As we know that,

P (Event) + P (not an Event) = 1

\Rightarrow P (E) + P (E') = 1

Then,

0.25 + P E = 1 P E = 1 − 0.25 P E = 0.75

So, the probability that it will not rain tomorrow is 0.75.
Hence, the option (3) is correct.

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