Take 3 sticks randomly from 5 small sticks with lengths of 3 cm, 4 cm, 8 cm, 9 cm, and 10 cm. How many different triangles can be placed?
从5根长分别为3厘米、4厘米、8厘米、9厘米、10厘米的小棒中任意取出3根，可以摆几种不同的三角形？
<result>7</result>