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1)how can we say that an element of a set can never be a subset of itself? 2)how can an equilateral triangle in a plane be a subset of a triangle in same plane?
Seesubset is sets and sets are collection of elements.we can say A is subset of B whenwe can say A is proper subset of B whenIn a plane there are lot of triangle now in those triangle there are some which equilateral so collection of equilateral triangles is a set which is smaller than or equal to set of triangles in the same plane.Thanks & RegardsArun KumarIIT DelhiAskiitians Faculty
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