Please answer quickly , i have my math exam tomorrow....

Asked by  | 21st Dec, 2008, 04:02: PM

Expert Answer:

5n doesnot end with the digit 0 for any value of n.

This is because the only prime in the factorisation of 5 is 5.


So, the uniqueness of the Fundamental Theorem of Arithmetic guarantees that there are no

other primes in the factorisation of 5n.

So, there is no natural number n for which 5n ends with the digit zero.


Answered by  | 23rd Dec, 2008, 03:22: PM

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