Puzzle:
2. find the sum of the digits of each multiple of 9 below.
sum of digits
...
Mathematics, 16.09.2019 04:10 anna4060
Puzzle:
2. find the sum of the digits of each multiple of 9 below.
sum of digits
1 + 8 = 9
9.1 = 9
9.2 = 18
9.3 = 27
9.4 = 36
9.5 = 45
9.6 = 54
9.7 = 63
9.8 = 72
9.9 = 81
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