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?
Select
A) 28/55
B) 19/33
C) 7/11
D) 4/7
E) 3/5
P(neither pen is defective) = 8/11*7/10 = 28/55   The answer is 28/55.
<result>A</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?