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23 September, 20:34

Which of these num. are prime:

1, 11, 21, 51?

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Answers (2)
  1. 23 September, 21:40
    0
    A prime number is a number that can only be divided by 1 and itself evenly.

    So, the answers are 1 and 11.
  2. 23 September, 22:24
    0
    11 is a prime number
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