(1/5)^2000 in decimal representation find last digit
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(1/5)^2000
1^2000=1
5^2000=10*10^x
so 1/10*10^x=0.00...1
so last digit will be 1
1^2000=1
5^2000=10*10^x
so 1/10*10^x=0.00...1
so last digit will be 1
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