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drcarver
drcarver
12.11.2020 • 
Mathematics

Let A equal the set of all strings of 0's, 1's, and 2's that have length 4 and for which the sum of the characters in the string is less than or equal to 2. Define a relation R on A as follows: For every
s, t ∈ A, s R t ⇔
the sum of the characters of s equals the sum of the characters of t.
It is a fact that R is an equivalence relation on A. Use set-roster notation to list the distinct equivalence classes of R. (Enter your answer as a comma-separated list of sets.)


Let A equal the set of all strings of 0's, 1's, and 2's that have length 4 and for which the sum of

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