gistfile1.rb

# app/models/quina.rb
class Quina
  def self.gerar_numeros
    resultado = (1..8).map { (1..10).map }
  end
end

# app/controllers/quina_controller.rb
class QuinaController < ApplicationController
  def index
    @quina = Quina.gerar_numeros
  end
end

gistfile2.rhtml

# app/views/quina/index.html.erb
<table>
<% @quina.each do |linha| %>
  <tr>
    <% linha.each do |coluna|  %>
      <td><%= "Coluna #{coluna}" %></td>
    <% end %>
  </tr>
<% end %>
</table>