Buckle the five digital cards 1, 2, 3, 4, and 5 on the table. If you touch one randomly, what is the probability of getting 5?
把1、2、3、4、5五张数字卡反扣在桌面上．任意摸一张，摸到5的可能性是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>