Two of the six faces of a cube are marked with 2, and one of the faces is marked with the number 3. What is the probability that a blank face will appear when it is thrown arbitrarily?
一个正方体木块的6个面上有2个面标上2，有1个面标上数字3，任意投掷一次出现空白面的可能性是多少
<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>