



 
Hi Janet, There are 90 two digit numbers 10, 11, 12, ... 99. 1) How many of them have the digit 7 in the units position?
2) How many of them have the digit 7 in the tens position?
Add the answers you got to questions 1 and 2. This isn't the correct answer because you have included the number 77 in 1 and 2 and you should only count it once. Thus the correct answer is
I hope this helps,  


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