Four friends must cross a bridge. How can they all cross it in just 17 minutes?
Can you work out which spinners were used to generate the frequency charts?
Infographics are a powerful way of communicating statistical information. Can you come up with your own?
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?
Can you tangle yourself up and reach any fraction?
Can you solve the system of equations to find the values of x, y and z?
Can you find the sum of the squared sine values?
Two trees 20 metres and 30 metres long, lean across a passageway between two vertical walls. They cross at a point 8 metres above the ground. What is the distance between the foot of the trees?
Two brothers belong to a club with 10 members. Four are selected for a match. Find the probability that both brothers are selected.
The equation a^x + b^x = 1 can be solved algebraically in special cases but in general it can only be solved by numerical methods.
