40 2end grade students performing at school dance, when placed in rows of 2 one student was left to dance alone. When arranged in rows of 3, two students were left to dance alone, when in rows of 4, three students danced alone. In rows of 5 everyone danced. How many students were left in last scene?

This question is not clear. There are 40 students in the second grade performing at a school dance? They are being placed in rows with students left to dance alone. Yet the question asks about a scene. Are there different number of rows per scene? Example: scene one has two rows and one extra student, scene two has three rows and two extra students, etc.