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Q.

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


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a

0.65

b

0.70

c

0.75

d

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,
PEvent+Pnot an Event=1 ⇒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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