## Alphabet

A forum for good logic/math puzzles.

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aurumelectrum13
Posts: 157
Joined: Wed May 20, 2009 3:11 am UTC

### Alphabet

See if you can determine the difference between the two groups of letters:

1. AEFHIKLMNTVWXYZ

2. BCDGJOPQRSU

EDIT: my apologies.
Last edited by aurumelectrum13 on Sun Jul 26, 2009 11:15 pm UTC, edited 1 time in total.

jaap
Posts: 2091
Joined: Fri Jul 06, 2007 7:06 am UTC
Contact:

### Re: Alphabet

aurumelectrum13 wrote:See if you can determine the difference between the two groups of letters:
1. AEFHIKLMNRTVWXYZ
2. BCDGJOPQRSU

You accidentally have R in both sets instead of just the second.
Spoiler:
First set consists of straight lines only, second set needs curved lines.

Ended
Posts: 1459
Joined: Fri Apr 20, 2007 3:27 pm UTC
Location: The Tower of Flints. (Also known as: England.)

### Re: Alphabet

Another one:

1. BCDGIJLMNOPQRSUVWZ
2. AEFHKTXY
Generally I try to make myself do things I instinctively avoid, in case they are awesome.
-dubsola

Buttons
Posts: 858
Joined: Wed May 02, 2007 3:27 pm UTC
Location: Somerville

### Re: Alphabet

A bunch more of these here. Ended's might be #22, since knowing the answer to that one I can see why Q might be controversial.

Moonbeam
Posts: 292
Joined: Sat Dec 08, 2007 5:28 pm UTC
Location: UK

### Re: Alphabet

Ended wrote:Another one:

1. BCDGIJLMNOPQRSUVWZ
2. AEFHKTXY

The following kinda works (a bit dodgy on 1 or 2 of them):

Spoiler:
The letters in number 1, can all be hand-written without taking your pen off the paper; whereas the letters in number 2 usually require the pen to come off the paper (if written normally)
..... like I said - it kinda works .

Ended
Posts: 1459
Joined: Fri Apr 20, 2007 3:27 pm UTC
Location: The Tower of Flints. (Also known as: England.)

### Re: Alphabet

Yep, both correct. Some of them do depend on the font.
Generally I try to make myself do things I instinctively avoid, in case they are awesome.
-dubsola

Buttons
Posts: 858
Joined: Wed May 02, 2007 3:27 pm UTC
Location: Somerville

### Re: Alphabet

On a related note, I can't for the life of me remember what the answer to #7 in the linked thread was:
I wrote:7: EGMPTYZ
Any ideas?

skeptical scientist
closed-minded spiritualist
Posts: 6142
Joined: Tue Nov 28, 2006 6:09 am UTC
Location: San Francisco

### Re: Alphabet

Here's a partition of the alphabet into 5 categories:
1. AMTUVWY
2. BCDEK
3. NSZ
4. HIOX
5. FGJLPQR
What property have I used to make this division?
Last edited by skeptical scientist on Sun Jul 26, 2009 9:32 pm UTC, edited 1 time in total.
I'm looking forward to the day when the SNES emulator on my computer works by emulating the elementary particles in an actual, physical box with Nintendo stamped on the side.

"With math, all things are possible." —Rebecca Watson

Buttons
Posts: 858
Joined: Wed May 02, 2007 3:27 pm UTC
Location: Somerville

### Re: Alphabet

skeptical scientist wrote:What property have I used to make this division?

Spoiler:
Subgroups of D4

EDIT: Also, I remembered what #7 was. Meh.

Piogre
Posts: 15
Joined: Wed Jul 22, 2009 5:13 pm UTC

### Re: Alphabet

Here's one:
ACEFGHIJLMNORSUVWXYZ

BCDGKPQT

Hint:
Spoiler:
There is a reason I put C and G in both categories

Hint 2:
Spoiler:
the letter combinations SH, TH, and CH go in the first category.

campboy
Posts: 52
Joined: Wed Jun 18, 2008 1:54 am UTC

### Re: Alphabet

Piogre wrote:Here's one:
ACEFGHIJLMNORSUVWXYZ

BCDGKPQT

Spoiler:
Letters that represent oral stops, I think. Hence C, G, which may be hard or soft in English.

Piogre
Posts: 15
Joined: Wed Jul 22, 2009 5:13 pm UTC

### Re: Alphabet

campboy wrote:
Piogre wrote:Here's one:
ACEFGHIJLMNORSUVWXYZ

BCDGKPQT

Spoiler:
Letters that represent oral stops, I think. Hence C, G, which may be hard or soft in English.

yep.

sixes_and_sevens
Posts: 71
Joined: Thu Jun 25, 2009 3:15 pm UTC
Location: Birmingham, UK

### Re: Alphabet

skeptical scientist wrote:What property have I used to make this division?

Spoiler:
Varieties and degrees of symmetry.

sixes_and_sevens
Posts: 71
Joined: Thu Jun 25, 2009 3:15 pm UTC
Location: Birmingham, UK

### Re: Alphabet

This one's a bit esoteric:

1.EHIKMOPRSTX
2.ABCDFGJLNQUVWYZ

Buttons
Posts: 858
Joined: Wed May 02, 2007 3:27 pm UTC
Location: Somerville

### Re: Alphabet

Also,

1. ABEHIKMNOPTXYZ
2. CDFGJLQRSUVW

F was in the first set for a while, before changing sides.

sixes_and_sevens
Posts: 71
Joined: Thu Jun 25, 2009 3:15 pm UTC
Location: Birmingham, UK

### Re: Alphabet

Buttons wrote:1. ABEHIKMNOPTXYZ
2. CDFGJLQRSUVW

I was considering this exact one yesterday, so it's more of a happy accident than cleverness.
Spoiler:
Each letter in set A has an analogous letter in the Greek alphabet.

A linguistics-y one for ex-servicemen and people who've worked in call centres:

1. ABCFIJLMNOQRSTV
2. DEGHKPUWXYZ