SOLUTION: Say U (Universal Set)={1,3,5,7,11} and A={1,11}. What is the null set?

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Question 1188738: Say U (Universal Set)={1,3,5,7,11} and A={1,11}. What is the null set?

Answer by MathLover1(20849) About Me  (Show Source):
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The null set, also referred to as the empty set, is the set that contains+no+elements.
{ } or Ø
For any set A, the null set is a subset of A
Ø ⊆ A