определите тип химической связи F2,O2,HI, NaH , CH2 ПОЖАЛУЙСТА !!!!!!

n!/(n-4)! = 22n!/(n-3)!

A. 1. When my grandparents were young people they used to ... . 2. In prehistoric times people used to ... . 3. In the 18th century they used to ... . 4. Before airplanes were invented people used to ... . 5. When there were no telephones people used to ... . B. 1. When I was two or three years old I got used to ... . 2. Later, when I was five, I was already used to ... . 3. When I went to school I quickly got used to ... . 4. A couple of years ago I still wasn't used to ... . 5. And now I think I am used to ... . Помогите, нужно дополгить предложение.

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задание на 5 сек

36^(log6 корень из 7)