A kind of dice, a total of 6 sides, write six numbers 1, 2, 2, 3, 4, 5 respectively, throw it once, what is the probability that the prime number will go up
一种骰子，共6个面，分别写上1、2、2、3、4、5六个数字，抛一次，质数向上的可能性是多少
<gadget id="calculator">4 / 6</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>