Mathematics · Relations and Functions
Which of the following relations is NOT an equivalence relation?
- 1'is isomorphic to' defined on the set of all groups
- 2'is parallel to' defined on the set of all straight lines in a plane
- 3'is greater than' defined on the set of real numbers✓
- 4'has the same birthday as' defined on the set of all people
Correct answer
'is greater than' defined on the set of real numbers
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