In a box of 11 pens, a total of 3 are defective. If a customer buys 2 pens selected at random from the box, what is the probability that neither pen will be defective?  Choose the correct answer.
A) 5/11
B) 16/33
C) 28/55
D) 38/77
E) 45/88
# defective pens = 3   # good pens = 8   Probability of the 1st pen being good = 8/11   Probability of the 2nd pen being good = 7/10   Total probability = 8/11 * 7/10 = 28/55   The answer is 28/55.
<result>C</result>
In a box of 11 pens, a total of 3 are defective. If a customer buys 2 pens selected at random from the box, what is the probability that neither pen will be defective?