The number of students in Class 4 and Class 2 is less than 50. If you want to divide into a group of 3 people, it will be divided exactly and there will be no leftovers; How many students are there in this class?
四2班学生人数不足50人．要分成3人一组，正好分完，没有剩余；要分成5人一组，正好分完，没有剩余；要分成9人一组，也能正好分完，没有剩余．这个班学生有多少人？
<result>50</result>