Step 1: List total possible outcomes.
When two dice are rolled, total outcomes = 6 × 6 = 36.
Step 2: Find outcomes where sum = 10.
Possible pairs: (4,6), (5,5), (6,4). So, number of favorable outcomes = 3.
Step 3: Apply probability formula.
\[
P(E) = \dfrac{\text{Favorable outcomes}}{\text{Total outcomes}} = \dfrac{3}{36} = \dfrac{1}{12}
\]
Step 4: Conclusion.
Therefore, the required probability is $\dfrac{1}{12}$.