Two fair dice are rolled. What is the probability that the sum is 7?
Answer and explanation
Correct answer: A. 1/6
- Step 1: There are 6 x 6 = 36 equally likely outcomes. Step 2. Six of them sum to 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1), so 6/36 = 1/6. Answer: 1/6. Why not the others: The others miss the ordered pairs or confuse the sum with a count.
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