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If you roll a pair of dice, what is the probability that the sum of the dice will be an even number greater than 5? Give answer as a percentage probability.

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mathematics

When rolling a pair of standard six-sided dice, there are 36 unique possible outcomes. This is because each die has 6 faces, and the number of total combinations is found by multiplying the number of outcomes for each independent event, so 6 times 6 equals 36. To determine the likelihood of a specific event occurring, we compare the number of times that event can happen against this total number of possibilities.

In this scenario, we are looking for sums that are both even and greater than 5. Let's consider the possible sums that fit this description: 6, 8, 10, and 12. For a sum of 6, there are 5 combinations: (1,5), (2,4), (3,3), (4,2), and (5,1). For a sum of 8, there are also 5 combinations: (2,6), (3,5), (4,4), (5,3), and (6,2). A sum of 10 can be achieved in 3 ways: (4,6), (5,5), and (6,4). Finally, a sum of 12 has only 1 combination: (6,6).

Adding up these favorable outcomes, we have 5 + 5 + 3 + 1, which totals 14. So, out of the 36 possible rolls, 14 of them will result in an even number greater than 5. To express this as a probability, we divide the number of favorable outcomes by the total number of outcomes: 14 divided by 36. As a fraction, this simplifies to 7/18.

Converting this fraction to a percentage gives us approximately 38.89%, which rounds up to 39%. Dice probabilities are a fundamental concept in probability theory, often used to introduce ideas like sample space, events, and combinations. Understanding these principles extends beyond games of chance, with applications in fields ranging from statistics and data analysis to risk assessment and scientific modeling. The seemingly simple act of rolling dice provides a rich ground for exploring complex mathematical concepts.