Rainbow Connection :)

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Across
  1. 2. a set operation and is a set of all elements that belong to A but not to B
  2. 4. it is a well defined collection of objects
  3. 5. is a set operation and is a set of all objects that are elements of either A or B
  4. 7. number is a number that can be expressed in the form p/q
  5. 8. set set with no elements
Down
  1. 1. number these are numbers that cannot be expressed in p/q
  2. 3. numbers a set of numbers that are classified into odd, even, prime and composite numbers
  3. 6. property of real numbers in which the sum or the product of the real numbers is a real number
  4. 7. numbers set of irrational and rational numbers