# Find the unit’s digit of the remainder of 59n – 31n divided by 28.   Option 1)     Option 2)     Option 3)     Option 4)     Option 5)

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

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

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

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