My favorite math problem – Roy Wright
Solved A snow removal company purchased a truck on September
The Snowplow Problem
超難問数学クイズ「雪が降った時刻」が死ぬほど難しすぎた - 明日は
Snowplow problem discussed in Math/Questions and Answers at Wizard
超難問数学クイズ「雪が降った時刻」が死ぬほど難しすぎた - 明日は
The Snobot Will Shovel The Driveway For You : r/BeAmazed
PS.6.2 Snowplow Problem
My favorite math problem – Roy Wright