There are 6 balls of the same size in a pocket, including 3 red balls and 3 white balls. If one ball is drawn randomly, what is the probability of getting a white ball?
口袋里有大小相同的6个球，其中3个红球，3个白球，从中任意摸出1个球，摸到白球的可能性是多少．
<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>