Question

# The complement of an event A is represented by

A
¯¯¯¯A
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B
A2
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C
A
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D
None of the above
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Solution

## The correct option is A ¯¯¯¯AThe complement of occurrence an event is the non-occurrence of that event. Formally, the occurrence of all the outcomes that are NOT favorable to the event comes under the complement of that event. The complement of an event A is represented by ¯¯¯¯A, where the bar above A signifies the occurrence of all the outcomes that are NOT favorable to the event A. As an example, If P(E)=rolling an even number, then P(¯¯¯¯E)=not rolling an even number =rolling an odd number Therefore, option (a.) is the correct choice.

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