To find the probability, we first determine the possible pairs of dice that add up to 6: \( (1, 5), (2, 4), (3, 3), (4, 2), (5, 1) \). Among these, two outcomes involve one of the dice showing a 2: \( (2, 4) \) and \( (4, 2) \). Hence, the probability is \( \frac{2}{5} \).