Question

what is the sum of 1234566585

Answer 1

$= 1 + 2 + 3 + 4 + 5 + 6 + 6 + 5 + 8 + 5 \\ \\ = 3 + 3 + 4 + 5 + 6 + 6 + 5 + 8 + 5 \\ \\ =6 + 4 + 5 + 6 + 6 + 5 + 8 + 5 \\ \\ =10+ 5 + 6 + 6 + 5 + 8 + 5 \\ \\ =15+ 6 + 6 + 5 + 8 + 5 \\ \\ =21 + 6 + 5 + 8 + 5 \\ \\ =27+ 5 + 8 + 5 \\ \\ =32 + 8 + 5 \\ \\ =40+ 5 \\ \\ =45$