There are 8 black, white, and red chopsticks, and they are mixed together. If you want to take out two pairs of chopsticks with different colors from these chopsticks in the dark, at least how many chopsticks must be taken to ensure that the requirements are met.
有黑色、白色、红色的筷子各8根，混杂地放在一起．黑暗中想从这些筷子中取出颜色不同的两双筷子，至少要取多少根才能保证达到要求．
<gadget id="calculator">8 + 2 + 1</gadget>
<output>11</output>

<result>11</result>