There is a rope skipping competition in the school. 2 out of 3 girls are selected, and 1 out of 2 boys is selected to participate in the competition. How many ways are there? Why?
学校进行跳绳比赛，从3名女生中选出2名，从2名男生中选出1名参加比赛，有几种选法？为什么？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>