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2 letter words


Best Answer Perhaps check it again, 12 August 2014 - 05:04 AM

Actually, I'm going to have to amend my answer to the revised answer of: 

Spoiler for
because I left out the obvious dual combinations.

 

 

******  Actually, bonanova, your keyboard, I'm sure, does not look quite like that.  For instance, the "Q" key

 

is not perfectly adjacent diagonally to the "S" key.  And, for instance, the "W" key is not perfectly adjacent diagonally

 

to the "D" key.

 

 

To go from Q to S in the shortest path, you must pass through either A or W.

 

And to go from W to D in the shortest path, you must pass through either S or E.

 

 

You just look more closely and you'll see that the top row is not in line with the middle row, I'm sure.

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#1 BMAD

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Posted 11 August 2014 - 02:13 PM

On a standard qwerty keyboard, how many "2-letter adjacency words" can be formed?

Adjacent implies that the word must be formed by two distinct letters that are next to each other on a keyboard (corners count)

Any two letters, for the sake of argument, form a two-letter word.
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#2 bonanova

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Posted 11 August 2014 - 04:28 PM

Diagonal adjacency permitted?

Only A-Z characters?

What does "corners count" mean?


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#3 BMAD

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Posted 11 August 2014 - 04:48 PM

Diagonal adjacency permitted?

Only A-Z characters?

What does "corners count" mean?

corners count means that diagonal adjacency is permitted.  

 

And yes, only letter characters.


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#4 Perhaps check it again

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Posted 12 August 2014 - 01:17 AM

Spoiler for

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#5 bonanova

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Posted 12 August 2014 - 03:25 AM

Spoiler for looks like


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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#6 Perhaps check it again

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Posted 12 August 2014 - 05:04 AM   Best Answer

Actually, I'm going to have to amend my answer to the revised answer of: 

Spoiler for
because I left out the obvious dual combinations.

 

 

******  Actually, bonanova, your keyboard, I'm sure, does not look quite like that.  For instance, the "Q" key

 

is not perfectly adjacent diagonally to the "S" key.  And, for instance, the "W" key is not perfectly adjacent diagonally

 

to the "D" key.

 

 

To go from Q to S in the shortest path, you must pass through either A or W.

 

And to go from W to D in the shortest path, you must pass through either S or E.

 

 

You just look more closely and you'll see that the top row is not in line with the middle row, I'm sure.


Edited by Perhaps check it again, 12 August 2014 - 05:10 AM.

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