There are 4 story books and 3 science books on the bookshelf. Xiao Ming takes out 1 story book and 1 science book from them. How many different ways are there?
书架上有4本故事书和3本科技书，小明从中取出故事书和科技书各1本，有多少种不同的取法．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>