A shipment of 230 smartphones contains 84 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 the correct choice:
A) 1/250 B) 1/84 C) 1/11 D) 9/68 E) 1/3
Probability of chosing one defective phone from a lot of 230 which ontains 84 defective phones is = (84/230)   Probability of chosing one defective phone from a lot of 229(we already picked one) which ontains 83(we already picked one) defective phones is = (83/229)   Combined probability of series of events = product of the probabilities = (84/230)*(83/229)   84/230 is close to (23/63) and (83/229)= (29/80)   so answer is (23/63)*(29/80) = (9/68)   So, answer will be 9/68
<result>D</result>
A shipment of 230 smartphones contains 84 that are defective. If a customer buys two smartphones at random from the shipment, what is the approximate probability that both phones are defective?