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
190
x2=256
By taking Square root we get
x=16
51 / 13 = 3.9231 = 3
51 - (13 x 3) = 12