If you touch 3 balls in a bag containing 3 yellow balls and 3 red balls, what is the probability of getting 3 red balls?
在一个装有3个黄球和3个红球的袋子中摸球，每次摸3个球，摸到3个红球的可能性是多少．
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>