Rival militias engage in prolonged gun battle

What is the primary focus of the '2nd' concept introduced in the video?

• A mathematical operation

• A historical event

• A grammatical term

• A scientific theory

Which example best illustrates the use of '2nd' as explained in the video?

• The second person in a queue

• The second stage of a rocket launch

• The second law of thermodynamics

• The second chapter of a book

What is a key takeaway about the '2nd' concept from the video?

• It is primarily used in scientific research

• It is a newly discovered concept

• It is a versatile concept used in various contexts

• It is only applicable in mathematics