3 out of 3
Show that all pentagonal numbers are one third of a triangular number.
3 out of 3
What 3D shapes occur in nature. How efficiently can you pack these shapes together?
3 out of 3
What does Pythagoras' Theorem tell you about the radius of these circles?
3 out of 3
Weekly Problem 52 - 2014
Four arcs are drawn in a circle to create a shaded area. What fraction of the area of the circle is shaded?
1 out of 3
How can you decide if a graph is traversable?
1 out of 3
Use your skill and judgement to match the sets of random data.
1 out of 3
This problem challenges you to sketch curves with different properties.
2 out of 3
Some treasure has been hidden in a three-dimensional grid! Can you work out a strategy to find it as efficiently as possible?
2 out of 3
If I tell you two sides of a right-angled triangle, you can easily work out the third. But what if the angle between the two sides is not a right angle?
2 out of 3
