Consider the following statements: 1. If A and B are exhaustive events, then their union is the sample space. 2. If A and B are exhaustive events, then their intersection must be an empty event. Which of the above statements is / are correct?

Consider the following statements: 1. If A and B are exhaustive events, then their union is the sample space. 2. If A and B are exhaustive events, then their intersection must be an empty event. Which of the above statements is / are correct? Correct Answer 1 only

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Concept:​

When a sample space is distributed down such that their union forms the sample space itself, then such events are called exhaustive events.

Calculation:

1. If A and B are exhaustive then their union is sample space 

So, this statement is correct.

 

2. Exhaustive events form when two or more than two events make sample space

Let, S = {1, 2, 3, 4}

A = {1, 2}

B = {2, 3, 4}

Here, A ∪ B = sample space 

But, A ∩ B ≠ ϕ 

So, intersection of A and B is not necessarily empty

Hence, option (1) is correct

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