Two fair dice are rolled. What is the probability that the sum is 7?
Answer and explanation
Correct answer: A.
- Step 1: There are equally likely outcomes. Step 2. The sum 7 comes from 1+6, 2+5, 3+4, 4+3, 5+2, 6+1: 6 outcomes, so . **Answer: . Why not the others:** The sums are not equally likely, and the sum value is not the number of outcomes.
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