There are 4 identical cards in a box with 2cm, 3cm, 4cm and 5cm written on them, and 1 card outside the box with 6cm written on it. Now randomly take out two cards from the box and put them together with a card outside the box, and take the numbers on the cards as the lengths of the three line segments, what is the probability that the three line segments can form a triangle
一个盒子中有4张完全相同的卡片，分别写有2cm，3cm，4cm和5cm，盒子外有1张卡片，写有6cm．现随机从盒内取出两张卡片，与盒子外一张卡片放在一起，以卡片上的数量分别作为三条线段的长度，则这三条线段能构成三角形的可能性是多少
<gadget id="calculator">8 / 12</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>