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Two integers.
Two of them.
41.542.443.344.245.146
20 number
The answer is 28
37
It is 28 because 2+8 = 10
10. They are the first ten multiples of 9.
28
10
When the sum of the digits you are adding is 10 or larger.
10 9+9+1 = 19 1+9=10