Mathematics · LCM and HCF
In a desert, X and Y are two spots separated by 100 km. At point X, two pillars are placed: one black and one white. Along the line joining X and Y, a white pillar is placed every 180 m and a black pillar is placed every 350 m. How many times can one find black and white pillars together while traveling from X to Y (excluding the starting point X)?
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