Ashoka's pillars were spaced at intervals of 100 meters along a straight road. If the road length is 350 meters and the pillars are placed at the start and at every 100 meters thereafter, how many pillars were erected?

Step-by-step solution

1. Pillars are placed at the start of the road, i.e., at 0 m.
2. Subsequent pillars are placed every 100 m: at 100 m, 200 m, 300 m.
3. The next possible position would be 400 m, but the road ends at 350 m.
4. Thus the pillars are at 0, 100, 200, and 300 meters – a total of 4 pillars.
5. Hence the answer is 4.

Concept tested: Spatial planning of monuments

Published 16 October 2026 · How this solution was prepared and checked