For a prime number p > 3, the highest number that always divides (p2 – 1) is

  • Option 1)

    20

  • Option 2)

    36

  • Option 3)

    8

     

  • Option 4)

    24

  • Option 5)

    4
     

Answers (1)

 Let \: p=5

P^{2}-1=25-1=24

24 \: will\: divide\: p^{2}-1

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