What is the probability of forming an odd number by using the three numbers 4, 5, and 6 to form a three-digit number?
用4、5、6三个数字组成三位数，则组成奇数的可能性是多少．
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

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