question_answer

Directions: In a bag there are n balls out of which \[\frac{\mathbf{n}}{\mathbf{4}}\] balls are black, \[\frac{\mathbf{n}}{\mathbf{8}}\] balls are white and \[\frac{\mathbf{5n}}{\mathbf{8}}\]

balls are red. A ball is drawn at random from the bag.

The probability that the drawn ball is either black or red, is _________

A) \[\frac{7}{8}\]                                                                          

B)  \[\frac{7n}{4}\]

C)  \[\frac{5n}{2}\]                                                            

D)  \[\frac{1}{8}\]

E)  None of these