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Intersection and union of sets (Hindi)
This video shows examples of intersection and union of sets and introduces some set notation.
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Why the collection of best batsmen in cricket could not be a set??
If we take that question from our own perspective i.e., I think the best batsman would be the one who stays on the pitch for long and scores run in the continuum, and I see only few batsmen in cricket, would now that be a set??(1 vote)
The collection of best batsmen in the world is a set. In fact, you can think of all the batsmen in the world as a super set (lets us call it 'all-batsmen') , and the collection of best batsmen in the world (let us call it 'best-batsmen') as the subset of the set 'all-batsmen'. You can also consider 'all-batsmen' to be a subset of 'all-cricket-players', and 'all-cricket-players' as a subset of 'human-beings' which in turn is a subset of 'all-mammals' and so on.(2 votes)
what we will do if their is any number which is repeating in a particular set(1 vote)
It is taken as only one element. For example, the set {3,78,41,25,41,90,41,6} is the same as {3,78,41,25,90,6}(2 votes)