Engineering Board Exam Reviewer · Odds and Mathematical Expectation · easy

The probability that an event occurs is 27. What are the odds against the event?

  1. 2 to 5
  2. 2 to 7
  3. 5 to 2
  4. 5 to 7

Answer

C. 5 to 2

Solution

Odds against = P( not occurring)P( occurring)=5/7/2/7=5:2.

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