Randomly draw two cards from the four number cards 0, 2, 4, and 6. What is the most likely sum of the numbers obtained?
从0、2、4、6四张数卡中任意抽出两张，所得到的数字之和是多少的可能性最大．
<gadget id="calculator">0 + 2 + 0 + 4</gadget>
<output>6</output>

<result>6</result>