SOLUTION: {lease help me solve this problem: A teacher has 9 students. They pose for a picture by standing in a single line. If the teacher stands on either end of the line, how many differe

Algebra ->  Permutations -> SOLUTION: {lease help me solve this problem: A teacher has 9 students. They pose for a picture by standing in a single line. If the teacher stands on either end of the line, how many differe      Log On


   



Question 504989: {lease help me solve this problem: A teacher has 9 students. They pose for a picture by standing in a single line. If the teacher stands on either end of the line, how many different arrangements of 10 people are possible?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

Number of arrangements when teacher stands on left side of the line = 9!

Number of arrangements when teacher stands on right side of the line = 9!

total number of ways = 2* 9!