Answer:
5/6
Step-by-step explanation:
A ruler has numbers as 1 ,2...12
When we consider numbers between 2 and 12, we can take numbers as
3,4,...11
i.e. there are 9 numbers between 2 and 12 (end values not exclusive)
Sample space has 12 numbers
Hence total probability is for the space between 0 and 12.
Space between 2 and 12 will be 10/12
=5/6
