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If the probability of an event is $p$ , then from the following choices, the probability of its complementary event will be:

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− p

p

1 − p

1 + p

answer is C.

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Detailed Solution

It is given that, the probability of an event is

p

.
Probability of an event

+

Probability of its complementary event

= 1

.
Substitute the value for the probability of an event is

1

, so,

p +

Probability of its complementary event

= 1

.
Probability of its complementary event

= 1 − p

Hence the probability of a complementary event is

1 − p

.
Hence option 3) is correct.

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