Need a more compact CSS selectors in Nokogiri search

Ruby
1

My below code is working fine. But can the same output be achieved with
some a more compact CSS selectors?

require ‘nokogiri’

doc = Nokogiri::HTML::Document.parse <<-end

foo
something hari
end

nodeset = doc.css(“table”)
nodeset.css(“tbody:nth-child(1)”).map{|n| n.css(’>tr’).to_a.size}

=> [2, 1]