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Revision history for BP904

Displaying 26-49 of 49 results found. page 1 2
     Edits shown per page: 25.
BP904 on 2020-08-02 07:50:28 by Leo Crabbe                disapproved
NAME

COMMENTS

REFERENCE

CROSSREFS

EXAMPLE

AUTHOR

REMOVE

 

akjsnfalkjbf;ksjbf

   

EX7527
   

EX7528
   

EX7529
   

EX7530
   

EX7531
   

EX7532
   

EX7533
   

EX7534
   

EX7535
   

EX7536
   

EX7537
   

EX7538
   

EX7539
   

EX7540
   

EX7541
   

EX7542
   

EX7543
   

EX7544
   

EX7545
   

EX7546
   

EX7547
   

EX7548
   

EX7549
   

EX7550
   

EX7551
   

EX7552
   

EX7553
   

EX7554
   

EX7555
   

EX7556
   

EX7557
   

EX7558
   

EX7559
   

EX7560
   

EX7561
   

EX7562
   

EX7563
   

EX7564
   

EX7565
   

EX7566
   

EX7567
   

EX7568
   

EX7569
   

EX7570
   

EX7571
   

EX7572
   

EX7573
   

EX7574
   

EX7575
   

EX7576
   

EX7577
   

EX7578
   

EX7579
   

EX7580
   

EX7581
   

EX7582
   

EX7583
   

EX7584
   

EX7585
   

EX7586
 

BP904 on 2020-08-02 06:31:40 by Molly C Klenzak                approved
NAME

aksjdbakdba

COMMENTS

EXAMPLE

-DATA

 

akjsnfalkjbf;ksjbf

 

BP904 on 2020-08-02 06:28:54 by Molly C Klenzak                approved
NAME

combinations vs permutations

COMMENTS

can you add a line separating each row so that the solution can just be combinations vs permutations without having to specify that it is about rows

or the solution can be "rows in each box show all possible combinations of sorting dots into bins vs rows in each box show all possible permutations of sorting dots into bins"

In the box on the left with 6 bins, there are 5 empty bins and 1 bin with 1 dot. The position of the bin with 1 dot does not create a unique combination of bins because there are still 5 empty and 1 with 1.

In the box on the right with a 3 by 3 grid of bins, the position of the bin with the dot creates a unique permutation. 1-0-0, 0-1-0, 0-0-1 are considered unique on the right, but the same on the left.

A null box would fit on either side, as would any singular box with any amount of dots. (does that make this problem invalid?)

order of bins does not matter on the left, order of bins matters on the right

CROSSREFS

+DATA

 

EX7575
   

EX7576
   

EX7577
   

EX7578
   

EX7579
   

EX7580
 

-DATA

 

EX7581
   

EX7582
   

EX7583
   

EX7584
   

EX7585
   

EX7586
 

BP904 on 2020-08-02 05:50:38 by Molly C Klenzak                approved
NAME

rows are all possible combinations, order of bins not considered, of x dots into r bins vs notso

COMMENTS

The order of the bins in each row does not matter in this problem. For example, if we have 4 bins with 0, 1, 1, and 0 dots in each, this is considered the same as having 4 bins in the order 0, 0, 1, 1, or 1, 0, 0, 1, and so on. Boxes on right side are invalid either because they do not have the same number of dots in each row or because they have rows of bins that are considered to be the same combination of dots.

CROSSREFS

my previous BP of permutations

+DATA

 

EX7563
   

EX7564
   

EX7565
   

EX7566
   

EX7567
   

EX7568
 

-DATA

 

EX7569
   

EX7570
   

EX7571
   

EX7572
   

EX7573
   

EX7574
 

BP904 on 2020-08-02 05:40:00 by Molly C Klenzak                approved
NAME

all possible permutations of x number of dots into r number of bins in each row vs notso

COMMENTS

I included combinatorics words in the concepts. I will make more BPs with these concepts tagged.

REFERENCE

EXAMPLE

+DATA

 

EX7551
   

EX7552
   

EX7553
   

EX7554
   

EX7555
   

EX7556
 

-DATA

 

EX7557
   

EX7558
   

EX7559
   

EX7560
   

EX7561
   

EX7562
 

BP904 on 2020-08-02 05:29:05 by Molly C Klenzak                approved
NAME

planar (all lines connecting dots can be uncrossed) vs non-planar (not all lines can be uncrossed)

COMMENTS

ignore gray lines

not important that each square contains 6 dots

I included graph theory words in the concepts appearing in this BP. I will probably make more graph theory BPs and use these same concepts.

REFERENCE

Richard J. Trudeau, Introduction to Graph Theory, 1975.

EXAMPLE

+DATA

 

EX7539
   

EX7540
   

EX7541
   

EX7542
   

EX7543
   

EX7544
 

-DATA

 

EX7545
   

EX7546
   

EX7547
   

EX7548
   

EX7549
   

EX7550
 

BP904 on 2020-08-02 05:11:20 by Molly C Klenzak                approved
COMMENTS

ignore gray line

disphenoid aka tetrahedron that is isosceles or scalene

Aaron Fairbanks had another valid solution for this one about how the angles in the triangles are arranged: "Some smaller angles connected to larger angles vs. not so"

EXAMPLE

BP904 on 2020-08-02 05:05:00 by Molly C Klenzak                approved
NAME

folds into disphenoid vs cannot fold into disphenoid

COMMENTS

ignore gray line

disphenoid aka isosceles tetrahedron

Aaron Fairbanks had another valid solution for this one about how the angles in the triangles are arranged: "Some smaller angles connected to larger angles vs. not so"

EXAMPLE

AUTHOR

Molly C Klenzak

+DATA

 

EX7527
   

EX7528
   

EX7529
   

EX7530
   

EX7531
   

EX7532
 

-DATA

 

EX7533
   

EX7534
   

EX7535
   

EX7536
   

EX7537
   

EX7538
 

BP904 on 2020-07-25 02:26:32 by Aaron David Fairbanks                approved
NAME

COMMENTS

REFERENCE

CROSSREFS

EXAMPLE

AUTHOR

REMOVE

  

BP904 on 2020-07-07 09:14:18 by Aaron David Fairbanks                approved
+DATA

  

BP904 on 2020-07-07 09:13:46 by Aaron David Fairbanks                approved
NAME

Bongard Problems with world one small equilateral triangle outline and one small circle outline vs other Bongard Problems.

COMMENTS

These outlines not allowed to overlap.

EXAMPLE

AUTHOR

Aaron David Fairbanks


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