Two boats travel up and down a lake. Can you picture where they will cross if you know how fast each boat is travelling?
Jo made a cube from some smaller cubes, painted some of the faces of the large cube, and then took it apart again. 45 small cubes had no paint on them at all. How many small cubes did Jo use?
Can you work out the probability of winning the Mathsland National Lottery?
In Fill Me Up we invited you to sketch graphs as vessels are filled with water. Can you work out the equations of the graphs?
Six samples were taken from two distributions but they got muddled up. Can you work out which list is which?
In this follow-up to the problem Odds and Evens, we invite you to analyse a probability situation in order to find the general solution for a fair game.
What is special about the difference between squares of numbers adjacent to multiples of three?
If you know the perimeter of a right angled triangle, what can you say about the area?
Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?
Can you explain what is going on in these puzzling number tricks?
