About Dar and decided to test their knowledge in mathematics and immediately went to the school for a lesson. Now our heroes facing the school board and try to answer the math questions. Monosyllabic example drawn directly on the board, and our heroes can not solve it. To gift and O did not break their heads, provide them with support. Remember all the rights that you have been taught in school and try to give the correct answer. The faster you give the answer to the example, the more likely the protagonists realize that they lack education.