TBQ - Find the digital root of consecutive numbers — task. Maths CBSE Live product, Class 8 (2025-26).

Calculate the digital roots of any 13 consecutive numbers. What do you observe?

The digital roots of any 13 consecutive numbers

repeat every \(9\) numbers in this order: \(1, 2, 3, 4, 5, 6, 7, 8, 9\), then cycle back to \(1, 2, 3, ...\)
does not repeat every \(9\) numbers in this order: \(1, 2, 3, 4, 5, 6, 7, 8, 9\), then cycle back to \(1, 2, 3, ...\).

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