1. If  \(HCF(336, 54) = 6\), find \(LCM (336, 54)\) is 
 
LCM of \(336\) and \(54\) is
 
2. Can the number \(6^n\), \(n\) being a natural number, end with the digit \(5\)? Give reasons.
 
Answer:
 
\(6^n\) end with the digit \(5\) for any natural number \(n\).