Check wether 4 power n can end with the digit 0 for any natural number

1.	Check wether 4 power n can end with the digit 0 for any natural number n
Answer» No....to end wid 0 it should have 2 and 5 both as its factors....so it can never end with digit 0 no because if it has to be end with 0 , it would have factors both 2 and 5 but it has only 2 as its factor ....so it can not end with 0 ...? No

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