perplexus.info :: Numbers : Think polynomial

Think polynomial (Posted on 2024-01-04)

Find, as a function of n, the sum of the digits of

9 * 99 * 9999 * ... * (10^2ⁿ - 1)

No Solution Yet Submitted by Danish Ahmed Khan

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	Subject	Author	Date
	Answer without proof	Larry	2024-01-04 11:57:44

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