35.
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21.
2,4,6,8,10,12,14,16,18
89
There are 5460 five digit numbers with a digit sum of 22.
Since the first integer of the 3-digit numbers must be 2, the sum of the second and the third digits would be 13.Since the largest digit is 9, the 3-digit numbers could be 249, 294, 258, 285, 267, and 276.Thus, there are 6 integers between 200 and 300 whose sum of their digits is 15.