Step 1 :A single die is rolled twice, resulting in a set of 36 equally likely outcomes.
Step 2 :We are looking for the outcomes where the sum of the two numbers rolled is greater than 9 and less than 13.
Step 3 :The outcomes that satisfy this condition are (4,6), (5,5), (5,6), (6,4), (6,5), and (6,6).
Step 4 :Since there are 6 possible outcomes for each roll, there are a total of \(6*6 = 36\) possible outcomes.
Step 5 :The event of getting a sum greater than 9 and less than 13 occurs in 6 of these outcomes.
Step 6 :Therefore, the probability of this event is \(\frac{6}{36}\), which simplifies to \(\frac{1}{6}\).
Step 7 :Final Answer: The probability of getting two numbers whose sum is greater than 9 and less than 13 when rolling a die twice is \(\boxed{\frac{1}{6}}\).