A 1 metre cube has one face on the ground and one face against a
wall. A 4 metre ladder leans against the wall and just touches the
cube. How high is the top of the ladder above the ground?
Four rods are hinged at their ends to form a convex quadrilateral.
Investigate the different shapes that the quadrilateral can take.
Be patient this problem may be slow to load.
Difference Sequence
Age 14 to 16 Short Challenge Level
Answer: the 28th term
Need to $-$2 six more times to get to 2000
So need to +3 six more times to get the position
10 +3$\times$6 = 28