SOLUTION: There are 7 books numbered 1-7 on the summer reading list. Peter randomly choose 2 books. What is the probability that Peter chooses books numbered 1 and 2 in either order.

Algebra ->  Probability-and-statistics -> SOLUTION: There are 7 books numbered 1-7 on the summer reading list. Peter randomly choose 2 books. What is the probability that Peter chooses books numbered 1 and 2 in either order.      Log On


   

Question 1079055: There are 7 books numbered 1-7 on the summer reading list. Peter randomly choose 2 books. What is the probability that Peter chooses books numbered 1 and 2 in either order.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
There are 7*6=42 ways to choose 2 books.
1-2 and 2-1 are two of them so,
P=2%2F42=2%2F21