There are small sticks with lengths of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 respectively. Choose a few small sticks and place them in a square with side length 10. How many choices are there? Law.
有长度分别是1、2、3、4、5、6、7、8、9、10的小棒各一根，从中选出几根小棒摆出边长是10的正方形，有多少种选法．
<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>