The school's Red Scarf TV station has to select a male host and a female host from among 4 boys and 5 girls. Xiaodong is one of the boys. What is the probability that he will be selected?
学校红领巾电视台要在4名男生和5名女生中挑选男、女主持人各一名，小东是男生中的一位，他被选中的可能是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>