In mathematics, if two fair standard six-sided dice are rolled, what is the probability that their sum is 8 given that the first die shows an even number?
Answer and explanation
Correct answer: C. 1/6
- Step 1: The condition restricts the first die to {2, 4, 6} (18 outcomes). Favorable pairs summing to 8 are (2,6), (4,4), and (6,2), giving . Answer: 1/6. Why not the others: 5/36, 1/4 and 1/9 do not satisfy the equation or conditions.
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