**Assertion (A):** The number $5^n$ cannot end with the digit $0$, where $n$ is a natural number.

**Reason (R):** Prime factorisation of $5$ has only two factors, $1$ and $5$.

Question

**Assertion (A):** The number $5^n$ cannot end with the digit $0$, where $n$ is a natural number.

**Reason (R):** Prime factorisation of $5$ has only two factors, $1$ and $5$.

Accepted Answer

Step 1: $5^n$ always ends in $5$, so it cannot end with $0$. A is true. R states "prime factorisation of 5 has only two factors, 1 and 5" — this is a statement about factors/divisors, not prime factorisation. R is false.

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