A box contains four soccer balls printed with numbers 112, 121, 211. 222. A footballer chooses one ball at random. Let A1 be the event that the first digit of the printed number of the ball chosen is 1. Similarly, A2 and A3 denote that second as well as third digit of the printed number is 1. The events A1,A2, and A3 are:

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SSC CGL Tier-II ( JSO ) 2019 Official Paper ( Held On : 17 Nov 2020 )
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  1. independent events
  2. dependent events
  3. pairwise independent events
  4. mutually exclusive events

Answer (Detailed Solution Below)

Option 3 : pairwise independent events
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Explanation

The events are called pairwise independent if any two events in the collection are independent of each other, while saying that the event are mutually independent

(or collectively  independent) it means that each event is independent of any combination of other events in the collection.

∴ Events, A1, A2, and A3 are pairwise independent events
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