A pair of dice is rolled. What is the probability that at least one die shows a 4 or the sum of the dice is 7?
Correct answer C. 15/36
Explanation
Eleven outcomes contain a 4 and six give a sum of 7; (3,4) and (4,3) are counted twice, so the total is 11 + 6 − 2 = 15 out of 36.
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