Find the unit’s digit of the remainder of 59n – 31n divided by 28.

 

  • Option 1)

     

    21

     

  • Option 2)

     

    32

     

  • Option 3)

     

    7

     

  • Option 4)

     

    0

     

  • Option 5)

     

    14

     

Answers (1)

  The unit’s digit of the remainder of 59n – 31n divided by 28 is:

Unit\: digit \: of \: \frac{(59^{n}-31^{n})}{28}

\frac{(59^{n}-31^{n})}{(59^{n}-31^{n})}= 0

Exams
Articles
Questions