In a box of 8 pens, a total of 2 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 choice from the following answers
A) 6/11	B) 8/15	C) 9/20	D) 11/25	E) 15/28
P(neither pen is defective) = 6/8*5/7 = 15/28   The answer is 15/28.
<result>E</result>
In a box of 8 pens, a total of 2 are defective. If a customer buys 2 pens selected at random from the box, what is the probability that neither pen will be defective?