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Find the remainder when 11^8 is divided ...

Find the remainder when `11^8` is divided by 7.

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`11^8/7=11xx11xx11xx11xx11xx11xx11xx11/7`
=`4xx4xx4xx4xx4xx4xx4xx4/7`
=`16xx16xx16xx16/7`
=`2xx2xx2xx2/7=16/7`
Thus the requried remainder=2
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