"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
- Alfred A. Montapert, Philosopher.
When the bar is melted and re-formed, the volume of the bar will remain same.
Hence 12*18*15 should remain same.
12*18*15 = 3^4*2^3*5
To put it algebraically, the question is now asking, which option has different factors from above.
A has a factor of 11. Hence A should be the answer.
Hope this helps!!
