Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?
Here are some rods that are different colours. How could I make a yellow rod using white and red rods?
Can you work out what step size to take to ensure you visit all the dots on the circle?
Draw some isosceles triangles with an area of $9$cm$^2$ and a vertex at (20,20). If all the vertices must have whole number coordinates, how many is it possible to draw?
Use a single sheet of A4 paper and make a cylinder having the greatest possible volume. The cylinder must be closed off by a circle at each end.
Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?
Chris is enjoying a swim but needs to get back for lunch. How far along the bank should she land?
