Question

Show that the number 4n, when n is a natural number cannot end with the digit zero

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Answer 1

Answer:

"If any number ending with the digit 0 in that prime factorisation 2 and 5 prime factors must be present" .

The prime factorisation of 4ñ = (2×2)ñ

In prime factorisation of 4ñ having only 2 as prime factor

So , 4ñ end with the digit "0" .