SOLUTION: How many ways can 8 elementary school students (4 boys and 4 girls) and their teacher be lined up against a wall to have their picture taken if the teacher must be on one of the en

Algebra ->  Permutations -> SOLUTION: How many ways can 8 elementary school students (4 boys and 4 girls) and their teacher be lined up against a wall to have their picture taken if the teacher must be on one of the en      Log On


   



Question 350659: How many ways can 8 elementary school students (4 boys and 4 girls) and their teacher be lined up against a wall to have their picture taken if the teacher must be on one of the ends?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
HI,
*Note: The 8 Students themselves can be arranged in 8! ways
.
If I am understanding the question, teacher may be on the right "or" left of the line.
teacher on the right end: that would result in 8! ways
teacher on the left end: that would result in 8! ways
.
8! + 8! or 2*8! would be the total ways