问题:在一根长100厘米的木棍上,自左至右每隔6厘米染一个红点.同时,自右至左每隔5厘米也染一个红点.然后沿红点处将木棍逐段锯开.请问,其中长度是4厘米的短木棍有几根?分析和解:为使问题变得简单些,有必要先进行一次转化,把染红点的操作方向统一起来.由于100能被5整除,所以可将“自右至左每隔5厘米染一个红点”转化为“自左至右每隔5厘米染一个红 Question: On a 100 cm stick, a red dot is dyed every 6 cm from left to right, and a red dot is dyed every 5 cm from right to left, and then along the red dot, What is the length of 4 cm short wooden stick? Analysis of reconciliation: In order to make the problem easier, it is necessary to carry out a conversion, the operation of the red dot unity.As 100 Can be divisible by 5, so can be “from right to left every 5 cm dyed a red dot” into "from left to right every 5 cm dyed a red