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Question
One of the two events must occur. If the chance of one is 2/3 of the other, then odds in favour of the other are
Options
1 : 3
3 : 1
2 : 3
3 : 2
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Solution
3 : 2
Let P(B) = x
Then, P(A) = \[\frac{2x}{3}\]
P(A) + P(B) = \[x + \frac{2x}{3} = \frac{5x}{3}\]
\[\Rightarrow x = \frac{3}{5}\]
Now,
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