Final answer:
The most likely sum when rolling two standard dice together is 7.
Step-by-step explanation:
When two standard dice are rolled together, there are 36 possible outcomes (6 outcomes for the first die multiplied by 6 outcomes for the second die). To find the most likely sum, we need to determine which sums are more likely.
The sum of two dice can range from 2 (1+1) to 12 (6+6). In this case, the most likely sum is 7. There are six possible ways to obtain a sum of 7: (1, 6), (2, 5), (3, 4), (4, 3), (5, 2), and (6, 1). No other sum has more ways to obtain it, making 7 the most likely sum.