question_answer

A cartoon contains 144 bulbs out of which 20 are defective and others are good Peter will buy one bulb if it is good, but will not buy if it is defective. The shopkeeper draws one bulb at random and gives it to him. The probability that he will buy it is

A) \[\frac{5}{36}\]             

B) \[\frac{31}{36}\]

C) \[\frac{13}{36}\]                       

D)        \[\frac{15}{36}\]

E) None of these