Show that there is no natural number 4 ki power n ends with 0

1.	Show that there is no natural number 4 ki power n ends with 0
Answer» cannot ends with the digit zero. ... A digit ending with zero must need to have 2 and 5 as factors or the number itself should have ended with the digit zero. The factors of 4 = 2×2. It has only 2 as a factor and 5 is missing.

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