How to parse 1 and 3 node?

Question

XPath

there is an xpath request descendant::tr[1 and 3]/td[1]
, it finds 3 nodes, but I need exactly the 1st and 3 nodes.

Answer 1

Wouldn't it be better to use position()

descendant::tr[position() = 1 or position() = 3]/td[1]