Chris is enjoying a swim but needs to get back for lunch. How far along the bank should she land?
Your school has been left a million pounds in the will of an ex-pupil. What model of investment and spending would you use in order to ensure the best return on the money?
Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?
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?
If everyone in your class picked a number from 1 to 225, do you think any two people would pick the same number?
Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?
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?
There are unexpected discoveries to be made about square numbers...
