Statisticshard · Past Paper
The probability of an event happening is 2/7. What are the odds against the event?
A2:7
B5:2
C2:5
D7:2
✓ Correct Answer: B — 5:2
If P = a/(a+b), odds against are b:a. Here a=2, a+b=7, so b=5. Odds against = 5:2.
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