1 out of 3
Can you work out the values of J, M and C in this sum?
1 out of 3
Weekly Problem 8 - 2016
Can you work out the size of the angles in a quadrilateral?
1 out of 3
Weekly Problem 39 - 2016
In the diagram, VWX and XYZ are congruent equilateral triangles. What is the size of angle VWY?
1 out of 3
Four cards have a number on one side and a phrase on the back. On each card, the number does not have the property described on the back. What do the four cards have on them?
1 out of 3
Weekly Problem 38 - 2017
In the diagram, what is the value of $x$?
2 out of 3
You may have met Magic Squares, now meet an Anti-Magic Square. Its properties are slightly different - can you still solve it?
2 out of 3
I start with a red, a green and a blue marble. I can trade any of my marbles for two others, one of each colour. Can I end up with five more blue marbles than red after a number of such trades?
2 out of 3
Six points are arranged in space so that no three are collinear. How many line segments can be formed by joining the points in pairs?
2 out of 3
In the following sum the letters A, B, C, D, E and F stand for six distinct digits. Find all the ways of replacing the letters with digits so that the arithmetic is correct.
2 out of 3
Find some triples of whole numbers a, b and c such that a^2 + b^2 + c^2 is a multiple of 4. Is it necessarily the case that a, b and c must all be even? If so, can you explain why?
