It’s an irrational number (can’t be expressed as a fraction with two integers).
Answer:
14.29% probability that Marlon's friend will think of the number 9
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this problem, we have that:
There are 7 numbers from 5 to 11(5,6,7,8,9,10,11)
9 is one of them
So

14.29% probability that Marlon's friend will think of the number 9
Hi there is this 0pp called Math-way that will help
1 2/3 . Hope this helps ;)