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：
How to Protect Your WordPress Site From Hackers　 Top 10 Relationship Blogs With the Best Pieces of Advice in 2020　 How to Construct Binary Search Tree from Preorder Traversal in P　 Dynamic Programming Algorithm to Compute the Block Sum in a Matr　 Smallest Multiple Algorithm using Bruteforce or GCD/LCM　 How many different ways can £2 be made using any number of coins　 Compute Factorial Digit Sum: Find the sum of the digits in the n　 Compute the Maximum Integer Right Triangles Solutions　 Power Digit Sum: What is the sum of the digits of the number 2^1　 Digit factorials: Find the Sum of All the Curious Numbers