When rolling a 6-sided die twice, the possible outcomes are the sums of the numbers on the two dice. However, the sum of the numbers rolled on two 6-sided dice can only range from 2 (1+1) to 12 (6+6). Since 2.5 is not a possible sum, the probability of getting a sum of 2.5 is 0.

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Here are five related questions:

1. What is the probability of rolling a sum of 7 with two 6-sided dice?
2. How many possible outcomes are there when rolling two 6-sided dice?
3. What is the probability of rolling doubles with two 6-sided dice?
4. What is the probability of rolling a sum greater than 8 with two 6-sided dice?
5. How does the probability of rolling a specific sum change as the number of dice increases?

Tip: Always check the range of possible outcomes before calculating the probability. This helps avoid errors like attempting to find the probability of an impossible event.