The teacher divided the students into four groups. One group had 5 students, another 8 students, and the third 7 students. If there were 24 total students, how many students were in the fourth group?
There are 5+8+7=<<5+8+7=20>>20 students in the first three groups.
There are 24-20=<<24-20=4>>4 students in the fourth group.
#### 4