Let A be the set of all strings of 0’s, 1’s, and 2’s of length 4. Define a relation R


Question:

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Let A be the set of all strings of 0’s, 1’s, and 2’s of length 4. Define a relation R on A as follows: For every s, t ∈ A, s R t ⇔ the sum of the characters in s equals the sum of the characters in t. (a) Is 1212 R 2220? Yes No (b) Is 1102 R 0212? Yes No (c) Is 1211 R 1212? Yes No (d) Is 1202 R 1121? Yes No

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