Class 51 selects 4 students from 6 students to participate in the composition competition. How many choices are there?
五1班从6名同学中，选出4名同学去参加作文竞赛，共有多少种选法？
<gadget id="calculator">6 * 5 * 4 * 3</gadget>
<output>360</output>

<gadget id="calculator">4 * 3 * 2 * 1</gadget>
<output>24</output>

<gadget id="calculator">360 / 24</gadget>
<output>15</output>

<result>15</result>