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11 February, 22:14

Alicia wrote these numbers:2,9,15,21. which of Alicia numbers is not a composite number?

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Answers (2)
  1. 11 February, 22:16
    0
    2 is a prime number

    not composite
  2. 11 February, 22:30
    0
    A number can either be composite or prime. The only prime number that you listed here is 2, because the only factors of 2 are 1 and itself.
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