To paint 3 different colors on the 6 faces of a cube, at least how many faces are painted with the same color.
要给一个正方体木块的6个面涂上3种不同的颜色，至少有多少面涂的颜色相同．
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<result>2</result>