How many different ways are there to choose 3 of Xiaogang, Xiaolan, Xiaoli, and Xiaojun as the host of the class party?
在小刚、小兰、小丽、小军4个人中选3个人作为班级联欢会主持人，一共有几种不同的选法？
<gadget id="calculator">4 * 3 * 2</gadget>
<output>24</output>

<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">24 / 6</gadget>
<output>4</output>

<result>4</result>