perplexus.info :: Numbers : Arithmetic Sequence Crossed Digital Root Puzzle

Arithmetic Sequence Crossed Digital Root Puzzle (Posted on 2023-02-16)

A, B, and C are three consecutive integer terms (in this order) of an arithmetic sequence with nonzero common difference d.
Define:
• x = A³+B³+C³
• d(x) as the digital root of x.

Determine d(x), given that x is NOT a multiple of 3.

Submitted by K Sengupta

Rating: 3.0000 (1 votes)

Solution: (Hide)

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Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re: Unless ...	Math Man	2023-02-17 16:19:47
Unless ...	Larry	2023-02-16 09:00:49
Huh?	Steve Herman	2023-02-16 07:45:02

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