You may also like

Building Tetrahedra

Can you make a tetrahedron whose faces all have the same perimeter?

Ladder and Cube

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?

Bendy Quad

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.

Inches and Barleycorns

Age 14 to 16 Short
Challenge Level

Yards, furlongs, inches, cubits, chains and barleycorns are all imperial measures of length.

There are 220 yards in a furlong and 36 inches in a yard. There are 44 cubits in a chain and 54 barleycorns in a cubit. 1 furlong is the same as 10 chains.

How many barleycorns are there in an inch?

This problem is adapted from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.