A) 6
B) 7
C) 2
D) 3
Correct Answer: D
Solution :
(d): Probability of picking a red ball \[=\frac{9}{9+p}\] Probability of picking a green ball \[=\frac{p}{9+p}\] \[\therefore \] \[=\frac{9}{9+p}=\frac{3p}{9+p}\] \[\Rightarrow \] \[3p=9\Rightarrow p=3\].You need to login to perform this action.
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