Shuffle the five number cards 1, 2, 3, 4, and 5 and put them on the table, and draw one of them randomly. What is the probability of getting a prime number?
把1、2、3、4、5五张数字卡片打乱后反扣在桌面上，从中任意摸出一张，摸到质数的可能性是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>