A box contains \(6\) blue, \(4\) white, and \(9\) red marbles. If a marble is drawn at random from the box, what is the probability that it will be
 
(i) white \(=\)
 
(ii) blue \(=\)
 
(iii) red \(=\)
Answer variants:
0.32
0.91
0.52
0.21
0.47