Last year, on the television programme Antiques Roadshow... work out the approximate profit.
Malcolm and Nikki run at different speeds. They set off in opposite directions around a circular track. Where on the track will they meet?
What percentage of the integers between 1 and 10,000 are square numbers?
Weekly Problem 52 - 2009
How did Jenny figure out that Tom's cards added to an even number?
Weekly Problem 10 - 2008
If the numbers 1 to 10 are all multiplied together, how many zeros are at the end of the answer?
A car with 5 tyres (four road tyres and a spare) travelled 30,000 km. All 5 tyres were used equally. How many kilometres' wear did each tyre receive?
