how many of the integers from 1 to 200 contains the digit 1 at least twice?

Answer 1

Have you written them down and counted them?

Answer 2

Yes i did. The figure that contains the digit 1 twice is only the number 11. I hope my answer is right.

Answer 3

What about?
101
111
112
113
114
etc.

Answer 4

OK I see, thanks you so much.

Answer 5

You're very welcome.

Did you also include 121, 131, etc.?

Answer 6

Yes I did,thanks again Ms.