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Part ACSIR NET December 2024an-average-of-four-means-a-sum-of-eight

An average of four means a sum of eight

Two fair dice are thrown at random independently. What is the probability that the average of the values on their upper faces is 4?

  1. A.5/36✓
  2. B.1/6
  3. C.7/36
  4. D.2/9

You have the answer. Trap Analysis is why the other three were written.

Not a worked solution repeated four times — the specific reasoning error each wrong option was built to reward.

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