About the Mathematics and Mathematics:
An institute teacher of mathematics, at preparatory courses, told about her teacher:
He was a big man and loved to eat. In the dining room one day he took two soups two second... the word lunch in two copies. Comes to the box. The young cashier clicks-tolls-tolls on the accounts: "You are 2-17" he is in response to "Not right." The treasurer again for the accounts: "2-05" he answered "wrong", the treasurer was finally confused and frightened by the click-shell-shell - "1-97", and this scientist husband replied to her "again wrong". Desperate cashier: “And how much should it be?!” He replied, “I don’t know. But two identical lunches are a complete number.”