Dongdong mixes a pair of Go pieces in a box, and then draws out 4 pieces from the box each time, so he has to touch at least a few times to ensure that the color of the pieces drawn three times is the same? (Go pieces are available in black and white)
冬冬把一副围棋子混装在一个盒子中，然后每次从盒子中摸出4枚棋子，那么他至少要摸几次，才能保证其中有三次摸出棋子的颜色情况是相同的？(围棋子有黑、白两种颜色)
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>