1 out of 3
Match the cumulative frequency curves with their corresponding box plots.
1 out of 3
Is it possible to find the angles in this rather special isosceles triangle?
2 out of 3
Can you see how this picture illustrates the formula for the sum of the first six cube numbers?
2 out of 3
Can you work out the dimensions of the three cubes?
2 out of 3
You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?
2 out of 3
In this problem we are faced with an apparently easy area problem, but it has gone horribly wrong! What happened?
2 out of 3
Two motorboats travelling up and down a lake at constant speeds leave opposite ends A and B at the same instant, passing each other, for the first time 600 metres from A, and on their return, 400 metres from B. How long is the lake?
2 out of 3
Can you explain the surprising results Jo found when she calculated the difference between square numbers?
2 out of 3
A circle of radius r touches two sides of a right angled triangle, sides x and y, and has its centre on the hypotenuse. Can you prove the formula linking x, y and r?
2 out of 3
Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?
