A shipment of 250 smartphones contains 67 that are defective. If a customer buys two smartphones at random from the shipment, what is the approximate probability that both phones are defective?	Choose one.
A) 1 / 250  B) 1 / 14  C) 1 / 11  D) 1 / 9  E) 1 / 3

Rationale: probability of chosing one defective phone from a lot of 250 which ontains 67 defective phones is = ( 67 / 250 ) probability of chosing one defective phone from a lot of 249 ( we already picked one ) which ontains 66 ( we already picked one ) defective phones is = ( 66 / 249 ) combined probability of series of events = product of the probabilities = ( 67 / 250 ) * ( 66 / 249 ) 67 / 250 is close to ( 26 / 97 ) and ( 66 / 249 ) = ( 22 / 83 ) so answer is ( 26 / 97 ) * ( 22 / 83 ) = ( 1 / 14 ) so , answer will be b
Answer: B