Calculated:

123456789+987654321=?

Ai nhanh mk tk

  Ask questions for the following answers:

1. His name is Manh.

2. His name is Tom.

3. There are for people in his family.

4. He is 45 years old.

5. It's an armchair.

Please help me!!! 

What calendar is the longest?

How many 4-digit numbers can you make by using only 0 and 1?

There are.........numbers