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3psilon Group Title

The only prime factors of a number n are 2,5,7, and 17 . Which of the following could NOT be a factor of n? 10 20 25 30 34

  • 2 years ago
  • 2 years ago

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  1. 3psilon Group Title
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    Explanation also please

    • 2 years ago
  2. peachpi Group Title
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    If you factorize the options into their prime factors, only 1 of them has a prime factor not on the list. i.e 10 = 2x5. both 2 and 5 are factors of n, so 10 can be a factor of n

    • 2 years ago
  3. 3psilon Group Title
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    OHHHHh so 30?

    • 2 years ago
  4. peachpi Group Title
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    right

    • 2 years ago
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