The table is covered with 5 number cards, which are written with numbers from 5 to 9. If you are asked to flip, what is the probability of flipping to an even number?
桌面上盖着5个数字卡片，分别写着5～9各数．如果让你去翻，那么翻到双数的可能性是多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>