题目:
A shipment of 8 television sets contains 2 black-and-white sets and 6color sets. If 2 television sets are to be chosen at random from this shipment, what is the probability that at least 1 of the 2 sets chosen will be a black-and-white set?
选项:
A、1/7
B、1/4
C、5/14
D、11/28
E、13/28
答案:
E