一个班去植树，总共植树222棵，已知老师和每个同学植树一样多，同学正好站三个纵队，问每个同学植树多少棵，这个班有多少个同学？

数学题解答：此题看似条件不足，其实是可以解答的。我们理解为一名老师带队。把植树总棵数分解质因数：222＝3×2×37＝6×37

可以看出符合生活实际的总人数是37人，每人植树6棵。去掉一名老师后，还有36名同学，正好是3的倍数，可以列成3路纵队。

推荐阅读：
7 Killer Ways to Higher Average Time on Page　 6 Tips for Creating Infographics to Make Your Blog Stand Out　 11 Foolproof Hacks to Drive Traffic to Your Blog in 2019　 7 Things Gutenberg Block Editor Does Better Than The Classic Edi　 Top 6 Things to Keep in Mind While Sending Bulk Emails　 7 Tweaks to Amplify Your Landing Page’s Conversion Rate　 Fresh Ideas to Make Money Via Your Blog　 4 Tips for Earning the Best Quality Backlinks　 Lombok Code Template Tutorial: You Probably Don’t Need to 　 5 Easy-to-Use SEO Tools and Their Uses