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Answer
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Digit Sum = 9
Reduced Digit Sum = 9

↓Steps Explained:↓

Calculate the digit sum of 180

Calculate the reduced digit sum of 180

Digit Sum

Add up 3 digits of 180:

Digit Sum → 1 + 8 + 0 = 9

Since our digit sum ≤ 9:
we have our reduced digit sum

Final Answer

Digit Sum = 9
Reduced Digit Sum = 9
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