Answer:
55
Explanation:
9 + 1 = 10
8 + 2 = 10
7 + 3 = 10
6 + 4 = 10
5 + 10 = 15
10 + 10 + 10 + 10 + 15 = 55
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
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