We use 3, 4, 5, 6 to form different four-digit numbers, what is the possibility of forming 3456
我们用3，4，5，6四个数字组成不同的四位数，其中组成3456的可能性是多少
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>