If one card is randomly selected from a deck, what is the probability of getting a square 2?
从一副扑克牌中任意取一张，取到方块2的可能性是多少．
<gadget id="calculator">1 / 54</gadget>
<output>1/54 = around 0.018519</output>

<result>1/54 = around 0.018519</result>