Ten roses are arranged in two rows of five flowers each:
What is the minimum number of roses that need to be moved to arrange the flowers into five rows of four roses each?
Similar puzzle: Plant 9 trees in 10 rows of 3
$\begingroup$
$\endgroup$
2
-
$\begingroup$ Just to clarify, the rows cannot be collinear like the puzzle you posted in the link? $\endgroup$– Shuri2060Mar 29, 2016 at 22:37
-
$\begingroup$ Yeah, someone should add that caveat. The original image already contains 10 unique rows of 4 roses each, leaving '0' as the correct answer. $\endgroup$– RolandMar 30, 2016 at 1:20
Add a comment
|
2 Answers
$\begingroup$
$\endgroup$
1
I can solve it by moving only
4 roses (I don't think we can do better)
My drawing :
in green the original roses, in red the new ones
-
$\begingroup$ I have not been able to find a way to use less than 4. Good going! $\endgroup$– QuiquȅMar 30, 2016 at 2:11
$\begingroup$
$\endgroup$
1
6.
As you can see, it is a (badly drawn) star, with 5 rows of 4 roses.
-
2$\begingroup$ Why would you need to move 10 roses if there are 10? Surely one of them can stay put. And in your drawing 4 of them have actually not moved. $\endgroup$– GendarmeMar 29, 2016 at 23:05