Question

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- He invited about 230 portable devices (Who, what kind of, when, or, Tag(разделительный))
- He was born on the 24th of February, 1955. (Who, When, Tag)

Answer 1

- Who invented about 230 portable devices?
What did he invent?
What kind of devices did he invent?
When did he invent about 230 portable devices?
He invented about 230 portable devices, didn't he?
Did he invent about 230 or 400 portable devices?

- He was born on the 24th of February, 1955, wasn't he?
 Who was born on the 24th of February, 1955?
 When was he born?