2 out of 3
Repeat a pattern of numbers to form a larger number. Can you find the sum of all the digits?
2 out of 3
Weekly Problem 53 - 2012
ABCDEFGHI is a regular nine-sided polygon (called a 'nonagon' or 'enneagon'). What is the size of the angle FAE ?
3 out of 3
Weekly Problem 52 - 2012
An irregular hexagon can be made by cutting the corners off an equilateral triangle. How can an identical hexagon be made by cutting the corners off a different equilateral triangle?
3 out of 3
Weekly Problem 15 - 2012
How many of the five properties can a heptagon have?
2 out of 3
Weekly Problem 1 - 2011
Use facts about the angle bisectors of this triangle to work out another internal angle.
2 out of 3
Weekly Problem 32 - 2014
Three overlapping squares are shown. If you know the areas of the overlapping and non-overlapping parts, can you work out the side lengths of the squares?
2 out of 3
Imagine reflecting the letter P in all three sides of a triangle in turn. What is the final result?
2 out of 3
How does the perimeter change when we fold this isosceles triangle in half?
3 out of 3
At how many times between 10 and 11 o'clock are all six digits on a digital clock different?
3 out of 3
There are 10 girls in a mixed class. If two pupils are selected, the probability that they are both girls is 0.15. How many boys are in the class?
