Запишите последовательность из пяти чисел, в которой первое число равно 1, а каждое следующее — на 2/3 больше предыдущего. Найдите сумму членов этой последовательности.
1. Pushkin is a great singer, isn't he? 2. They aren’t going to play football today, are they? 3. The girl is reading a book, isn't she? 4. Children mustn’t open their textbooks, must they? 5. I am in Pobeda Street, aren't I? 6. The woman isn't in the park, is she? 7. Masha can play tennis, can't she? 8. You don't have a brother, do you? 9. Your mother doesn't speak French, does she? 10. We like to play basketball, don't we? 11. Her father works in a hospital, doesn't he? 12. Rob has a pet Nessie, doesn't he?
