Asked by Aakash
Check whether 3^n can end with the digit 0,where n is not equal to 1 and n E N.
Answers
Answered by
Steve
only multiples of 10 end in zero.
3 is not a factor of 10, so no.
Also, check the last digit of powers of 3: 3,9,7,1,... and they repeat. No zeros.
3 is not a factor of 10, so no.
Also, check the last digit of powers of 3: 3,9,7,1,... and they repeat. No zeros.
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