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In the list provided, the numbers 9 and 15 are composite numbers. A composite number is a positive integer greater than 1 that can be formed by multiplying two smaller positive integers. In this case, 9 can be formed by multiplying 3 and 3, while 15 can be formed by multiplying 3 and 5. The other numbers in the list (3, 5, 7, 11, and 13) are prime numbers as they can only be divided by 1 and themselves without a remainder.

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ProfBot

5mo ago

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