Bongard Problems

[Demon]

(03-14-2014 01:12 PM)TheGreatErenan Wrote:  The only thing I can think of, though I really doubt this is the correct solution, is that if you treat them as hexadecimal numbers and convert to binary, then the number of 1's is divisible by 3 in Group A but not in Group B.

I'm just going to assume that's true, since I don't feel like testing that at 11:30 at night, but even so, there's a much simpler answer.

[Dabestbro]

(03-14-2014 12:32 PM)Demonwind66 Wrote:  Here's one for math types, though this might be too much

Group A
1331
1943
5337
1703
0547

Group B
6553
4697
2690
1573
6479

Group A is Prime, Group B is not?

[Demon]

Ooh. You're getting close. You'll notice that 5337 is divisible by 3, but you're on the right track.

[Dabestbro]

The first two numbers in group A are prime, the first two numbers in group B are composite?

[.Memories.]

(03-15-2014 07:48 AM)Dabestbro Wrote:  The first two numbers in group A are prime, the first two numbers in group B are composite?

Has to be something with all the items of each set, not just a subset.

[[PETA] Doodat]

How about this:
1331 is 11^3
1943 is 29*67
5337 is 3^2*something
1703 isn't prime
0547 is prime.
Idk if that will help anyone

[Demon]

(03-15-2014 08:14 AM)[PETA] Doodat Wrote:  How about this:
1331 is 11^3
1943 is 29*67
5337 is 3^2*something
1703 isn't prime
0547 is prime.
Idk if that will help anyone

Yep that's the answer *sarcasm*

A lot of you are on the right track, you just need to . . . break things down.

[Flarp55]

If you split each 4-digit number into 2 2-digit numbers, then Group A splits into 2 primes, and Group B doesn't.

[Demon]

(03-15-2014 09:24 AM)Bbobb555 Wrote:  If you split each 4-digit number into 2 2-digit numbers, then Group A splits into 2 primes, and Group B doesn't.

We have a winner! Now someone else make one.

[Alvendor]

I'll have a try

Group A:
Sharkfood Island
Skull Duggery
Long Nine

Group B:
Reaper
Glitch
Blitz Beach