When asked how old she was, the teacher replied: My age in years is not prime but odd and when reversed and added to my age you have a perfect square...

Four rods, two of length a and two of length b, are linked to form
a kite. The linkage is moveable so that the angles change. What is
the maximum area of the kite?

Adding in Pairs

Age 11 to 14 Short Challenge Level:

Three whole numbers, when added two at a time, give sums of 39, 48 and 51.