23 December 2016
480. Triangle 3X3: Remove 3 to leave 9
Take away 3 matchsticks to leave 9 triangles. The 9 triangles do not have to be equal in size.
There are 7 triangles of size 1X1 and 2 triangles of size 2X2.
There are also other solutions.
Share to Twitter
Share to Facebook
Share to Pinterest
Post a Comment
Post Comments (Atom)