Основные математические понятия в английском языке. Прокошева И.И. - 31 стр.

                                         APPENDIX.

                                     AGE PROBLEM

   Once there lived a clever king. One day a scientist came to him and surprised him
with his knowledge. He amused the king by telling him many things that were new
and interesting. Finally, the king wanted to find out the age of the scientist but the did
not want to ask him.
   “Professor,” said the king, “I have an interesting problem for you. Think of the
number of the month of your birth, but don’t tell me.”
   The scientist was 60 years old, and his birthday was in December. So he thought
of 12.
   “All right,” he said.
   “Multiply it by two,” said the king.
   “I have done it.”
   “Add 5.”
   “I have”.
   “Now multiply by 50.”
   “Yes.”
   “Subtract 365.”
   “Yes.”
   “Add your age.”
   “Yes.”
   “Add 115.”
   “Yes.”
   “And now,” said the king, “tell me result.”
   “Twelve hundred and sixty,” answered the scientist.
   “Thank you,” said the king. “You were born in December and now you are sixty
   years old.”
   “How do you know that?” asked the scientist.
   “From your answer,” replied the king.
   “Oh!” the professor said laughing, “That is a polite way to find out one’s age.”
   Can you find out your friends’ age in the same way?

                               FIND THE NUMBERS
   Can you find two numbers composed only of ones which give the same result
   when you add them and when you multiply them? I and 11 are very close, but they
   are not the numbers which you must find, because if you add them, you will have
   12, and if you multiply them, you will have only 11.

                          HUNDREDS AND HUNDREDS.
      1. Arrange 4 eights so that they will exactly equal 1.
      2. Arrange 4 fives in one line to make 100.

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