Question:medium

Check whether \(6n\) can end with the digit \(0\) for any natural number \(n\).

Updated On: Jan 13, 2026
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Solution and Explanation

A number ending in the digit \(0\) is divisible by \(10\), which implies it's also divisible by \(2\) and \(5\) since \(10 = 2 × 5\).

The prime factorization of \(6^n\) is \((2 × 3)^n\).

Observe that \(5\) is not a prime factor of \(6^n\).

Consequently, \(6^n\) is never divisible by \(5\) for any value of \(n\).

Therefore, \(6^n\) cannot end with the digit \(0\) for any natural number \(n\).

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