SET

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Across
  1. 2. If the universal set is U = { 1 , 2 , 3 , 4 , 5 } and A={2,4}, then A′ = { 1 , 3 , 5 }.
  2. 4. a set of which all the elements are contained in another set.
  3. 6. Theintersection of two sets, denoted A∩B, is the set of all elements that are common to both sets A and B.
  4. 9. The difference of two sets, denoted − A−B or \ A\B, is the set of all elements that are in A but not in B.
  5. 12. The set of all rational and irrational numbers.
  6. 13. It consists of the set of real numbers and two operations calledadditionandmultiplication
  7. 14. The symmetric difference of two sets, denoted AΔB or A⊕B, is the set of all elements that are in either A or B, but not in both.
Down
  1. 1. The empty, denoted ∅ ∅ or { } {}, is a set with no elements
  2. 3. {..., -4, -3, -2, -1}
  3. 5. The union of two sets, denoted A∪B, is the set of all elements that are in either set A, or set B, or in both.
  4. 7. Set If U= { 1 , 2 , 3 , 4 , 5 } U={1,2,3,4,5}, then U is the universal set.
  5. 8. {0, 1, 2, 3, 4, ...}
  6. 10. The set of all positive and negative whole numbers, including zero.
  7. 11. If A = { a , b , c } A={a,b,c}, then ∣A∣=3.