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Find the units digit of 8^25....

Find the units digit of `8^25`.

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Possibilites of units digy of `8^n` ar `8,4,2` and 6. the units digit of `8^n` gets repeated for every `4^th` power of 8.
`therefore` Remainder obtained when 25 is divided by 4 is 1.
`8^25 =8^(4xx6xx1)cong8^1`.
`therefore` Units digit `8^25 is 8`.
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