Last digit of 17^1000
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last digit 17^1000 = '1'
17^1 = ..7
17^2 = ..9
17^3 = ..3
17^4 = ..1
17^5 = ..7
Hence cycle repeats after 4 cycle.
17^1000 = 17^(1000/4) = Rem of power = 0
Hence 17^1000 has an unit digit = '1'
17^1 = ..7
17^2 = ..9
17^3 = ..3
17^4 = ..1
17^5 = ..7
Hence cycle repeats after 4 cycle.
17^1000 = 17^(1000/4) = Rem of power = 0
Hence 17^1000 has an unit digit = '1'
Iamkeetarp:
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Answer:
answer is 1
..............
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