SOLUTION: Among all 2 digits numbers (10 to 99), You need to find out how many of those has its unit digit greater than the tens digit...?

Question 949938: Among all 2 digits numbers (10 to 99), You need to find out how many of those has its unit digit greater than the tens digit...?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let's work backwards.
Number starting with 9, none.
Numbers starting with 8, 1 (89).
Numbers starting with 7, 2 (78,79).
I think you see a pattern here.

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