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4 June, 01:53

Tell which number is prime: 15, 23, 45, 51

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Answers (2)
  1. 4 June, 02:13
    0
    23 is a prime number. Since 15,45, and 51 all are divisible by 3
  2. 4 June, 04:10
    0
    The prime number is 23
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