Discrete Mathematics :Unit 1

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Across
  1. 3. method of proving mathematical statements
  2. 5. collection of objects
  3. 8. always false
  4. 9. representation of sets in the form of diagram
  5. 10. common elements between two sets
Down
  1. 1. always opposite of a statement
  2. 2. collection of all subsets
  3. 4. always true
  4. 6. number of elements in the set
  5. 7. addition of two sets