Mary and James each sit in a row of 7 chairs.  They choose their seats at random.  What is the probability that they don't sit next to each other?
Question:
Mary and James each sit in a row of 7 chairs.  They choose their seats at random.  What is the probability that they don't sit next to each other?
Answer:
Let's think step by step.

user
\frac{5}{7}
Mary and James each sit in a row of 7 chairs.  They choose their seats at random.  What is the probability that they don't sit next to each other?
train