There are four good students, Xiao Wang, Xiao Zhang, Xiao Fang and Xiao Ling. It is necessary to send two people to participate in the city's three-good student commendation meeting. What is the probability that Xiao Wang and Xiaofang will go to the city's three-good student commendation meeting together?
有小王、小张、小芳和小玲4名三好学生．要从中选派两个人去参加市三好学生表彰大会，其中小王和小芳一起去参加市三好学生表彰大会的可能性是多少．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>