Asked by abraham

how many of the integers from 1 to 200 contains the digit 1 at least twice?
Answered by Ms. Sue
Have you written them down and counted them?

Answered by abraham
Yes i did. The figure that contains the digit 1 twice is only the number 11. I hope my answer is right.
Answered by Ms. Sue
What about?
101
111
112
113
114
etc.
Answered by abraham
OK I see, thanks you so much.
Answered by Ms. Sue
You're very welcome.

Did you also include 121, 131, etc.?
Answered by abraham
Yes I did,thanks again Ms.
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