Liu Jia traveled to Beijing on the National Day. She brought two white and yellow tops, and three pairs of blue, black and red trousers. She took a top and a pair of trousers and put them on at will. How many possibilities are there?
刘佳国庆节到北京旅游，她带了白色和黄色两件上衣，蓝色、黑色和红色3条裤子，她任意拿一件上衣和一条裤子穿上，共有多少种可能？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>