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Kenneth Rosen Edition 7 Exercise 2.1 Question 5 (Page No. 125)

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Determine whether each of these pairs of sets are equal.

  1. { $1,3,3,3,5,5,5,5,5$ }, { $5,3,1$ }
  2. {{ $1$ }}, { $1$ , { $1$ }}
  3. $\phi$, { $\phi$ }
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