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A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the
 
(i) yellow ball =
 
(ii) red ball =
 
(iii) blue ball =
Answer variants:
\frac{3}{2}
\frac{1}{3}
\frac{1}{2}
\frac{2}{3}