IV.Reading
1. Read the text
Unhealthy American
Habits Meliha and her children live in St. Paul. She is from Somalia. She came to the U.S. five years ago. Many things are different in America. American food is very different from Somali food. You can buy junk food with fat, sugar, and oil. Americans don’t walk as much as people in Somalia. You can drive a car or take the bus. Meliha sees many overweight people in America. Meliha’s children like junk food. They like to eat hamburgers and French fries. She does too. She notices that she gains weight in America. Her children like to watch T.V. They do not go outside to play. Meliha doesn’t walk very much because she has a car. Meliha goes to the doctor. The doctor says she has to eat more fruits and vegetables. He says that too much junk food like chips, fries, and sugar is bad for her health. He tells her that she needs to get more exercise. He says that too much fat and not enough exercise is bad for her. It is bad for her children, too. Meliha doesn’t know if the doctor is right or wrong.
Is it true or false?
1. Meliha has children.
2. Meliha is from Ethiopia.
3. American food is the same as Somali food.
4. People walk more in Somalia.
5. Some people in America are overweight.
6. Her children like French fries.
7. Meliha loses weight in America.
8. Meliha likes to watch TV.
9. Meliha drives a car.
10. Meliha goes to the doctor.
Построим это число поцифренно. Для этого, воспользуемся одним из условий задачи: если n цифра в этом числе, то следующая цифра не может быть равна n-1, n или n+1.
К тому же, нужно выберать минимально возможную цифру (так как нам нужно минимально число).
Начнем с первой цифры. Для этого выберем минимально возможную (и отличную от нуля) - цифру 1.
Вторая цифра не может быть 0, 1 или 2. Поэтому минимально возможная цифра - цифра 3.
Третью цифру выбераем таким же цифра 0.
Четвертую и пятую цифру, выбераем тем же с дополнительным условием - их сумма должна быть 17-1-3-0=13. Следовательно, четвертая цифра - цифра 4, а пятая цифра - цифра 9.
Откуда заключаем, что наше число - 13049