Correct: 1011, 1111, 0010, 0111, 1101, 1001, 1110, 0101, 1000, 1010, 0001, 0011, Incorrect: 1021, 1121, 1234, 0002, 0021, 0120, 0003, 2011, 2012, 1012, 0004, 0112,

4 BIT BINARY NUMBERS

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