+1 vote

An urn contains $5$ red balls and $5$ black balls. In the first draw, one ball is picked at random and discarded without noticing its colour. The probability to get a Red ball in the second draw is

1. $\frac{1}{2} \\$
2. $\frac{4}{9} \\$
3. $\frac{5}{9} \\$
4. $\frac{6}{9}$
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