perplexus.info :: Numbers : The class of ‘55’

The class of ‘55’ (Posted on 2021-02-27)

How many numbers comply with the two conditions:
1. It is a permutation of 5 consecutive digits.
2. It is divisible by 55.

Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)

Solution: (Hide)

There are 20 normal 5 digit numbers. Detailed lists provided by solvers

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

Subject	Author	Date
Python sol'n with or without wrap-around	Larry	2021-02-27 17:01:19
computer solution	Charlie	2021-02-27 15:55:35
More if wraparound at 9,0 is considered consecutive.	Larry	2021-02-27 10:55:54
Let me count the ways (spoiler)	Steve Herman	2021-02-27 08:11:52

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