Question

A cynical painter has been appointed to paint 512 pillars of Meenakshi temple. He starts painting pillar number 1 and then skips one unpainted pillar and paints the next. He proceeds to the last and turns back using the same logic. He continues back and forth like this till the last pillar is painted. What's the number of the last pillar to be painted?

Answer 1

2nd pillar will be the last to colour