Since you could pick 5 non-clay (5 sandy + 5 loamy), then all next 5 (including first 5 clay) are high-clay. But to *guarantee* 3, you must consider that someone could pick all 5 non-clay first. - AMAZONAWS
Soil Selection Strategy: How to Guarantee 3 High-Clay Samples When Choosing from a Mix
Mar 11, 2026