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If A is set of different triangles in th...

If A is set of different triangles in the plane and B is set of all positive real numbers. A relation R is defined from set A to set B such that every element of set A is associated with some number in set B which is measure of area of triangle. Is this relation as function?

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Verified by Experts

Two or more different triangles may have same area.
But area of each triangle is unique.
This means each element (triangle) of set A is associated with unique value (Area) of set B.
So, given relation is function.
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