Mathematics
Write the following set in Roster form :
C = { x : x is a composite number and 5 ≤ x ≤ 21 }
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Answer
C = { x : x is a composite number and 5 ≤ x ≤ 21 }
C = { x : x = 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21}
Hence, C = {6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21}.
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