problem
Favourite
Shopping Basket
The items in the shopping basket add and multiply to give the same amount. What could their prices be?
problem
Favourite
Parabolic Patterns
The illustration shows the graphs of fifteen functions. Two of them have equations $y=x^2$ and $y=-(x-4)^2$. Find the equations of all the other graphs.
problem
Favourite
Expenses
What is the largest number which, when divided into 1905, 2587, 3951, 7020 and 8725 in turn, leaves the same remainder each time?