question_answer

A box contains 24 coloured marbles. Eighteen of then are yellow and the rest are either red or blue. A marble is picked at random. Find the probability of picking an yellow marble.

A)  \[\frac{1}{4}\]                                  

B)  \[\frac{3}{4}\]

C)  \[\frac{3}{8}\]                  

D)         \[\frac{1}{8}\]