Among the three-digit numbers composed of three numbers 3, 2, and 1, if one is chosen at random, what is the probability of getting an even number?
在3，2，1三个数组成的三位数中，随便取一个，取到偶数的可能性是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>