Explanation:
The probability that the two dice have the same number of spot(s) is 1/6 or 16.7%. This is because there are six possible outcomes when rolling a pair of dice: both dice having 1 spot, both dice having 2 spots, both dice having 3 spots, both dice having 4 spots, both dice having 5 spots, and both dice having 6 spots. Since the sum is less than 6, this eliminates the possibility of both dice having 6 spots. That leaves 5 possible outcomes, and each outcome has an equal probability of occurring. Therefore, the probability of both dice having the same number of spots is 1/6 or 16.7%.