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Fill in the grid with A-E like a Sudoku. Which letter is in the starred square?

Mr Ross tells truths or lies depending on the day of the week. Can you catch him out?

Can you form this 2010-digit number...

Weekly Problem 37 - 2010
An ant is crawling around the edges of a cube. From the description of his path, can you predict when he will return to his starting point?

Weekly Problem 10 - 2011
Will this product give a perfect square?

What does the sum of these three numbers tell us about their product?

Andrea has just filled up a fraction of her car's petrol tank. How much petrol does she now have?

Ivan, Tibor and Alex sat a test and achieved 85%, 90% and 95% respectively. Tibor scored just one more mark than Ivan. How many marks did Alex get?

The circle of radius 4cm is divided into four congruent parts by arcs of radius 2cm as shown. What is the length of the perimeter of one of the parts, in cm?

The diagram shows an equilateral triangle touching two straight lines. What is the sum of the four marked angles?