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Circle all prime 11 12 13 14 15 16 17 18 19 so witch ones are prime

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11,13,17,19 are tje ones who are prime !!!
User Kalyan Pradhan
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11,13,17,19. 12 is not prime.It is divisible by 2. 14 is not prime.It is also divisible by 2. 15 is not prime.It is divisible by 3.16 is not prime. It is divisible by 2.18 is not prime.  It is divisible by 2.
User Blazina
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