⚓️anchor
Level 8 DP Minister
[TI7]
Posts: 2,418 
Mini-Profile Background: {"image":"https://bjorstad.files.wordpress.com/2012/11/skansenlykt.jpg?w=590","color":"59a0f1"}
Mini-Profile Text Color: f0591e
|
Post by ⚓️anchor on Mar 18, 2017 0:52:26 GMT
At each stage, the black dot moves three corners clockwise and the white dot moves four corners anticlockwise. After how many stages will both dots be together in the same corner?  {Answer}
They will never appear together in the same corner as in a heptagon, three corners clockwise is the same as four corners anticlockwise. |
|
Joey
Service Department 
Loyal member, member number 100, contest winner & super-poster
[TI38] Never do today what you can put off till tomorrow.
Posts: 14,129
Mini-Profile Background: {"image":"http://www.eurogarden.ro/images/galerie/galerie9/1873-flower_garden.jpg"}
Year of Birth: Before dirt
Nationality: Euro-American
|
Post by Joey on Mar 18, 2017 21:48:18 GMT
4 ?
|
|
⚓️anchor
Level 8 DP Minister
[TI7]
Posts: 2,418
Mini-Profile Background: {"image":"https://bjorstad.files.wordpress.com/2012/11/skansenlykt.jpg?w=590","color":"59a0f1"}
Mini-Profile Text Color: f0591e
|
Post by ⚓️anchor on Mar 18, 2017 23:23:09 GMT
No. Try to visualise the dots' movements on the figure. If you don't understand it then, I think you'll be surprised when you finally click on the answer spoiler.  |
|
Joey
Service Department
Loyal member, member number 100, contest winner & super-poster
[TI38] Never do today what you can put off till tomorrow.
Posts: 14,129
Mini-Profile Background: {"image":"http://www.eurogarden.ro/images/galerie/galerie9/1873-flower_garden.jpg"}
Year of Birth: Before dirt
Nationality: Euro-American
|
Post by Joey on Mar 19, 2017 0:58:16 GMT
Was doing it on a piece of paper, but it gets confusing when they are going in different directions. Was starting to think they never meet. I'll keep trying.
|
|
