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A non-trivial progression (Posted on 2015-11-17) Difficulty: 2 of 5
November 13, 2015, when expressed in MM/DD/YY format, is 11/13/15. The MM, DD and YY terms, in that order, form an arithmetic progression. It is non-trivial because the three numbers are different.

The first such date in any given century is 01/02/03. What is the last non-trivial arithmetic progression in the century?

What is the last non-trivial geometric progression in the century?

See The Solution Submitted by Steve Herman    
Rating: 4.6667 (3 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(2): answers revisitedCharlie2015-11-18 11:23:18
re: answers revisitedSteve Herman2015-11-17 20:09:46
Solutionanswers revisitedAdy TZIDON2015-11-17 18:52:49
Hints/Tipsd3 answers?Steve Herman2015-11-17 16:13:37
Some Thoughtsre: d2 answers + my d3 remarkAdy TZIDON2015-11-17 11:16:08
Solutiond2 answersCharlie2015-11-17 10:37:59
Solutiond1 answers:Ady TZIDON2015-11-17 10:26:11
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