15. People are sitting in theater watching a movie. The row they are in contains several seats. After intermission, they all return to the same row but choose their seats randomly. What is the probability that neither of the two people sitting in the two seats were previously sitting in an aisle seat?
a. 1
b. 0
c. 17/21
d. 13/21

• ans : 0
• 11 years agoHelpfull: Yes(2) No(9)